Plant Care

Petunia Budworm Problem - Updated

Written byUncle Mike Mahoney
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This is an update of a post from last summer (My Petunia Budworm Problem) because the annoying flower-eating pests called budworms are back this year with a vengeance.

Petunia BudwormPhoto source and for more information: Penn State

My petunias weren’t flowering well.

Knowing that petunias don’t like the heat, my first thought was to blame the few hot days we had. Then, because petunias like regular feedings, I wondered if perhaps I didn’t feed them enough before I went on vacation.

But when I looked more closely I noticed chew marks in the tender foliage of flower. Then I saw black dots* all over the foliage. Finally, I found the insect - the infamous petunia budworm.

If you see similar damage on your petunias, look for the budworm caterpillars during dusk when their larvae are most active, or during daylight hours, check around the base of the plant where they hide. They start really small and get bigger as they get older.

The bad news is budworm caterpillars can devour all your petunia flowers in a couple days. The good news is that there are two treatments that work great.

How to treat for Petunia Budworm

Petunia Budworm Treatment Options: Captain Jack's Deadbug Brew (left) and Eight - Yard and Garden (right) by BonidePetunia Budworm Treatment Options: Captain Jack’s Deadbug Brew (left) and Eight - Yard and Garden (right) both by Bonide

If you catch it on the early side, a good remedy is a spray called Captain Jack’s Organic Deadbug Brew by Bonide. It’s a good solution for lots of bug problems, so not a bad thing to keep on hand.

If your petunias are really infested, another option is called Eight Yard and Garden, also by Bonide. Eight is water-based, but not organic. It works a little bit quicker, but in most cases Capt Jack’s is just fine. Whichever you choose you’ll need to re-apply every couple weeks or as needed.

Then try to feed your petunias with some water-soluble fertilizer. Do this and your petunias will bounce back to full bloom in about three days. Neat, huh?

Preventing Budworm from Returning

The budworm can survive winter as a pupa in the soil unless the soil freezes deeply. So if you overwinter potted plants in a protected area, such as garage, you might be helping the buggers survive. If you are going to keep potted geraniums or other perennial host plants between seasons, remove the soil to eliminate pupae and repot the plants before overwintering.

*FYI: The black dots are little budworm poops.

IMPORTANT NOTE ON BEES AND CAPTAIN JACK’S DEADBUG BREW

This product is toxic to bees exposed to treatment for 3 hours following treatment. Do not apply this pesticide to blooming, pollen-shedding or nectar-producing parts of plants if bees may forage on the plants during this time period. It is best to apply late in the afternoon when bees are not active. This product is toxic to aquatic invertebrates. To protect the environment, do not allow pesticide to enter or run off into storm drains, drainage ditches, gutters or surface waters. Applying this product in calm weather when rain is not predicted for the next 24 hours will help to ensure that wind or rain does not blow or wash pesticide off the treatment area.

'Uncle' Mike Mahoney - Mahoney’s Garden Centers
The Guy  Mike’s 41 and married with 3 kids - a boy 12 , a girl 7 and a boy 5.  The Gardener  Mike loves all gardening but says he’s known for the veggies.

How to Feed Annuals

How to Feed Annuals

Did you know that at Mahoney’s our garden hose water has fertilizer mixed in? That means every time we water our annuals we’re feeding them. If you want your annuals to continue to look their best it’s important to continue to feed them at home. Not surprising, if you search online for fertilizing instructions you’ll read a lot of high maintenance, often conflicting instructions. That’s why we thought we’d try to simplify the issue.

To start, here are two quick facts to keep in mind

  1. Water alone is not enough; annuals need to be fertilized. Some annuals such as Geraniums and Petunias need higher amounts; other annuals such as Impatiens and Scaevola need less.
  2. If your annuals are in a container or hanging basket every time you water without adding fertilizer, or whenever it rains, water drains through the hole at the bottom of the container, and nutrients in the soil are carried along with it. These nutrients need to be replaced.

There are 2 basic fertilizers: water-soluble and time-release granular – both work well, and using the two in combination often works best. (Note: the following are instructions only for annual plants – perennials, shrubs, etc have different feeding needs)

Water-Soluble

Water Foluble Plant Food: Miracle-Gro All Purpose Plant Food 20-20-20Water Foluble Plant Food: Miracle-Gro All Purpose Plant Food 20-20-20Our best-selling water-soluble fertilizer is Miracle-Gro All Purpose Plant Food 20-20-20. It’s fast acting for both indoor and outdoor plants, and has a unique ability to be absorbed through both roots and leaves. (Note: there are many water-soluble fertilizers on the market, but Miracle-Gro 20-20-20 is only available at independent garden centers.) Feeding with Miracle-Gro is pretty easy; you can use their Hose-end Garden Feeder‚ or simply mix it in any watering can. The instructions on the package say to mix 1 tablespoon of Miracle-Gro for every gallon of water, and to feed every 7 to 14 days. But because nutrients are so frequently leached from the soil, we actually recommend feeding every time you water – but at a lower concentration – approximately half the dosage.

Time-Release

Time-Release Plant Food: Osmocote Outdoor and Indoor Plant FoodTime-Release Plant Food: Osmocote Outdoor and Indoor Plant FoodThe time-release fertilizer we recommend is Osmocote Indoor and Outdoor Plant Food – it’s super easy to use and feeds for months. Simply spread the granular fertilizers over the soil around the plants and scratch them in lightly. Then water. Apply at planting time and then once or twice over the growing season.

Using Both

In our experience we get the best results when we use both methods in tandem. We recommend a handful of Osmocote when you first buy the plant and then dilute applications of Miracle-Gro every time you water

Too much of a good thing

While we recommend frequent fertilization, “over-fertilizing” is a bad thing. Overly rapid, weak growth is often the first sign of too much fertilizer. More insidious is “root burn.” This is where the too much fertilizer causes the roots to shrivel and die. The plant will appear as if it hasn’t received enough water, but that is erroneous. The water was there, but the roots were not able to take it in. In either case, immediately cut back on fertilizer and allow the plant a chance to return to a normal balance. We also suggest you do not fertilize very dry plants. Dry roots can be sensitive to the salts in the fertilizer – another good reason to have the slow-release fertilizer in place.

Final note

Don’t be afraid to prune. Annuals actually perform better when occasionally pruned back – especially if you see unshapely, leggy growth. There is no special skill required – simply take your trusty pruners (or sharp scissors) and cut back a little to create a more dense, rounder shape. Keep in mind that well-fed plants tend to grow quickly and will require more trimming.

My Azaleas and Rhododendrons look dead! What can I do?

Written byUncle Mike Mahoney
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Winter Damage on a Rhododendron: Although the leaves may be brown and curled, this doesn’t necessarily mean the plant is dead. In fact in most cases the plant will rebound easily with a little TLC.Winter Damage on a Rhododendron: Although the leaves may be brown and curled, this doesn’t necessarily mean the plant is dead. In fact in most cases the plant will rebound easily with a little TLC.After a long, cold, snowy winter like we just had, we often see damage to our shrubs and trees often called “winter kill” or “winter damage.” The most common damage is brown or dead-looking azaleas, rhododendrons, holly and other broadleaf evergreens. Most people assume cold temperatures are to blame, but it’s actually caused by dehydration. In winter, cold dry winds and bright sunshine suck moisture from the foliage of broadleaf evergreens, much like chapped lips after a day of skiing. Plus, because the ground is usually frozen and the plant is dormant, plants can’t move water through their roots back to theire leaves. The result is dehydration, browning the tips of leaves or even entire branches. The more exposed to wind and sun, the greater the damage; particularly heartbreaking when it happens to shrubs you’ve loved for 20 years or more. Yes, sometimes the plant is dead and will need to be replaced, but often winter damage only make shrubs appear dead.

How do I know if it can be saved?

Look carefully and you’ll see that the leaves may be brown and brittle but the branch may have good life. Try gently scratching the bark with a fingernail, if underneath it’s greenish and pliable it’s probably still alive. If under the bark is brown and brittle the branch is probably dead – but not necessarily the whole plant. Continue the exploration down the branches and you will probably see some life along the way. Usually I tell people to leave winter damaged shrubs alone until late May. By then you can see the new growth starting, making it easier to see and prune the brittle dead wood. In any case, don’t give up on them to soon – in early spring, winter damage often looks a lot worse than it really is! All you need is a little patience and a good organic fertilizer.

The Scratch Test: Try gently scratching the bark with a fingernail, if underneath it’s greenish and pliable it’s probably still alive. If under the bark is brown and brittle the branch is probably dead – but not necessarily the whole plant.The Scratch Test: Try gently scratching the bark with a fingernail, if underneath it’s greenish and pliable it’s probably still alive. If under the bark is brown and brittle the branch is probably dead – but not necessarily the whole plant.

Holly-tone by Espoma: Use it on all broadleaf evergreens like Rhododendrons, Azaleas, Holly, Boxwood and Andromeda.Holly-tone by Espoma: Use it on all broadleaf evergreens like Rhododendrons, Azaleas, Holly, Boxwood and Andromeda.

Help the recovery with a good organic fertilizer.

I can remember I had a Holly and an Azalea that turned completely brown from winter damage. Then after feeding with Espoma Holly-tone fertilizer and some warmer weather from Mother Nature both plants completely re-foliated and grew back to where they were the previous fall. This saved me the time and effort of replanting the shrub. The earlier in spring you take action the better because it will allow more time for the bare branches to re-bud and start to fill in. There are other products to choose from, but Holly-tone is easy to use and it’s worked well for me. If there is mulch around the base, just push it away to expose the soil. Scratch the soil surface a little to allow for good soil contact and spread Holly-tone around the drip line of the shrub (the area under all branches). Just follow instructions on bag for proper quantity. Then just replace the mulch, water and wait for the magic healing to begin. You may need to go back and do some tip pruning later to cut out some dead wood but it’s far better than throwing out a live plant.

Side note:

There are several products that help prevent winter kill. They’re called “anti-desiccants,” a kind of a sunscreen for plants. Spraying an anti-desiccant places a harmless transparent wax coating over the broadleaves. The effect is to reduce the dehydration caused by wind and sun. Typically it’s applied after the first really cold nigh in late November or December. At Mahoney’s we recommend Wilt Stop by Bonide, but there are other good products to choose from.

Safe Solutions for Mole and Vole Problems

Written byUncle Mike Mahoney
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Vole Damage: Damage from vole ‘runways’, as pictured above, is an un-welcome sight as snow melts in the spring. Photo Credit: Jason D. Lanier, UMass Extension TechnicianVole Damage: Damage from vole ‘runways’, as pictured above, is an un-welcome sight as snow melts in the spring. Photo Credit: Jason D. Lanier, UMass Extension Technician

Now that our record-breaking snow pack is just an unpleasant memory, our attention can focus on the lawn and garden. Something to watch for are signs of moles, voles and other winter hungry rodents. Heavy snow provides protective cover from predators, so moles and voles are free to do a lot of damage without risk.

Moles (carnivores) can be found in the lawn feeding on grubs and other insects or even earthworms.  Voles (herbivores) tend to go after perennial beds and turfgrass. As snow receeds, you might notice bare patches of lawn where voles have fed on the grass, usually accompanied by vole ‘runways’ (winding 1-2 wide pathways) which are caused by wear from vole traffic.There are lots of different products on the market for moles and voles. I’ve seen baited poison pellets syringes that are injected into the ground, peanut or grub looking bait poison, or even guillotine looking traps.

Mole Max: by BonideMole Max: by Bonide

While you may feel the rodents that just ruined your lawn and garden deserve to die, there is an organic non-lethal product that really works: It’s called MOLEMAX from Bonide. MOLEMAX is an organic castor oil. Available in liquid or granules, the package says it repels moles, voles, gophers, rabbits, skunks and armadillos. (Man, I really hate it when those armadillos hang around) Very simply, these critters don’t like the taste and move out of the area relatively quick. It’s safe around children, plants and pets, and can be applied spring, summer or fall – but now is a great time since you’re bound to discover those guys in great numbers after the snow is gone. Apply on lawns, flower beds and gardens. Lasts up to 3 months.

Click here to download the “VOLE DAMAGE TO LAWNS” (PDF) factsheet from UMass Extension

Fall Gardening Tips

Late August through Early October is a perfect time to get things done in your garden. The summer flowers have passed and the conditions are just right for refreshing your landscape and getting a head-start on spring. Cooler air and ample rain help to stimulate a period of rapid root growth, making fall a perfect time plant new trees, shrubs and cold tolerant annuals. Here are some tips on what you can do right now to dress up your yard and get a jump on spring.

Clean Up

Many diseases can overwinter in the stems of perennials and the fallen leaves of deciduous trees and shrubs. To prevent your plants from becoming re-infected in the spring it is important to rake up leaves and cut down any diseased stems of perennials.

Water

Winter survival of woody plants depends largely on the moisture of the soil in the fall. Water needs to be applied to ensure that woody plants have taken up sufficient amounts of moisture to prevent stress related to desiccation, that is, plant water loss in winter. When soils are dry in late summer and early fall, water should be applied once per week or so, depending upon soil moisture levels, through October. Click here for some tips for watering

Fertilize

It is widely assumed that fertilizing in the fall will promote late season growth that is prone to winter damage. However, recent studies have shown that the nutrients that support spring growth in woody plants are those that were taken up in the previous year and stored over winter.

Mulch

Fall is a great time to apply mulch to garden beds. By adding a 3-4 inch layer of mulch will buffer plants’ root systems from fluctuating temperatures and moisture levels throughout the fall and winter. Additionally it will help suppress weed growth.

Prune

Fall is the best time to prune deciduous trees and shrubs because after the leaves have fallen it’s much easier to see which limbs need pruning and how it will affect the overall shape of the plant. Another reason to prune in the fall is that insects and diseases are far less prevalent this time of year.

Plant

Planting trees and shrubs in the fall gives them a chance to start spreading some roots in the cool moist soil. The cooler soil and air temperatures along with the increased rainfall also take away much of the shock that plants incur during the planting process

Soil Health Basics

Healthy soil means healthy plants

The key to healthy plants is healthy soil. By improving the quality of your soil you can quickly improve the health of your plants.

The components that make up soil are minerals, organic matter and air. With the correct proportions of each of these, it makes for a habitable environment for living organisms like worms and fungus. These living organisms, called soil life, are essential to plant health. They break down nutrients found within the soil into a form that can be consumed by plants’ roots.

The soil found throughout New England is extremely diverse. Even within your own yard it can be sand in one area and clay in another. Most soils whether they are sand, clay or somewhere in between, can be greatly improved by adding organic matter.

Organic Matter is partially decomposed plant matter. Although it accounts for only a small percentage, it is vital to the composition of healthy soil. It adheres to the minerals in the soil, forcing them to separate and creating pores for air, water and organisms to circulate throughout the soil. It’s full of nutrients, which are broken down by the soil life and consumed by your plants. It also absorbs water and retains it until your plants can utilize it.

At Mahoney’s, we offer dozens of products rich in organic matter like composts, manures and other amendments. We also offer soil additives like myccorhizae, which will increase the soil life. To learn more about what you can do to improve your soil, stop by and speak to one of our plant care experts.

Tips for Growing Hydrangeas

When they’re flowering, hydrangeas be one of the most beautiful and rewarding landscape plants, but they can also be one of the most frustrating when they refuse to bloom. Here are some simple but important tips to help your hydrangea perform it’s best.

Growing Hydrangeas

Hydrangeas do best in morning sun with afternoon or dappled shade. Too much sun and they’ll need frequent watering, too little sun and they’ll have fewer flowers. They prefer an organic, dark, loamy soil. Amend soil with a good quality compost planting mix to increase organic matter in the soil. Top dress with a 2-3 inch layer of mulch to insulate the roots an to help retain moisture in the soil. For more growth and more flowers, fertilize with a balanced fertilizer every spring.

Pruning hydrangeas

Any pruning of macrophylla hydrangeas should always be done by the end of July to prevent cutting off next years flower buds. To revitalize older plants, thin them out by cutting some of the older stems. To reduce the overall size, cut above a set of leaves.

Winterizing Hydrangeas

The flower buds on both traditional and reblooming hydrangeasneed protection from winter and early-spring freezes. Mound straw, mulch or leaves around the base and stems. Remove this mound at the end of April.

Hydrangea Color

For many macrophylla and lacecap hydrangeas, their flower color depends on the acidity of the soil.

  • For blue flowers, the soil needs to acidic. Aluminum Sulfate can be added to increase the acidity of the soil.
  • For pink and red flowers, the soil needs to be alkaline. Lime can be added to decrease the acidity of the soil.

Tips for Growing Perfect Annuals

Carrie planting geraniums

Here are five things to remember in order to produce the best looking annual garden.

  1. Wait for the weather

    Don’t plant your annuals too soon. Most annuals cannot be planted until after the last frost.

  2. Don’t skimp on soil

    You’ll need a good soil mix whether you’re planting in the ground or in a container. Annuals will grow bigger and healthier with an adequate soil blend. Try our own Garden Lover’s Premium potting soil.

  3. Feed them often

    Your annuals will need fertilizer. It is a proven fact that fertilized annuals will produce more flowers and grow to be fuller and more vibrant. You’ll want that full look sooner in your planters or window boxes. There are two types of fertilizers to use with your annuals. Use a time release granular fertilizer to ease the transition of re-potting or planting. Osmocote is a great product for such. Two to three weeks after planting, use a water-soluble fertilizer weekly to maintain the beauty of your annuals. The Neptune’s Harvest Line are perfect water soluble products which are also organic.

  4. Get the light right

    Be sure to pay attention to the recommended lighting conditions for your annuals. Annuals not given enough sun will be less vibrant and lively. Annuals given too much sun can look dried up and yellow at the leaves. Be sure to read the recommended amount of sun on the tag provided.

  5. Water Wisely

    Watering is crucial. You don’t need to water everyday simply for the sake of watering. When your annuals need water, you’ll know it. Simply feel the soil to see whether or not it is damp. Pay special attention to days where the sun may be especially strong as your annuals may require more water than usual.

Tips for Successful Shade Gardening

Does your yard have a shady spot where sun-loving plants like turfgrass and lilacs refuse to thrive? Well, don’t despair! Beautiful, lush gardens can be created in all but the heaviest-shade areas. And shade gardens provide a cool, welcoming retreat from the hot summer sun.

Shade plants (such as hostas and ferns) often have wonderfully dramatic foliage. It’s relatively easy to create a sophisticated and elegant garden in the shade that emphasizes these foliage elements. Many flowering shrubs and perennials also thrive in partial shade areas.

Understanding the Different Kinds of Shade

Light Shade
A light shade area is one that receives 4-6 hours of sun each day, or that experiences dappled patterns of equal sun and equal shade throughout the day. Most plants recommended for “full sun” will actually perform well in light shade. Many traditional shade plants will do well here too, if protected from the hottest afternoon sun.

Medium Shade
A medium shade area receives bright light and less than 4 hours of direct sun, with a high cover of deciduous trees or partial shade from nearby buildings. All shade plants should do well in this environment, especially if they get enough water. A few “full sun” plants can also adjust and be useful in these areas.

Heavy Shade
In a heavy shade area, the sun is blocked by buildings, evergreens, or a heavy canopy of deciduous trees, with only indirect or reflected light throughout the day. It is difficult to grow a wide variety of plants in these areas; choose only those that will tolerate low light. In good soil, shade-loving groundcovers should work well. Consider also using stone, statuary, container gardens, and perhaps an attractive bench.

Dealing with Shade Created by Deciduous Trees

Getting plants established beneath deciduous trees is a special challenge-not just because of the shade, but because the newcomers must compete with the trees’ root systems for water and nutrients. The following tips should help.

Soil Conditions
The soil under deciduous trees often lacks sufficient organic matter and nutrients. Therefore, soil amendments (such as Mahoney’s composted cow manure) should be added either to individual planting holes or to the whole garden bed. Add I part soil amendment to every 2 parts existing soil. Dig the planting holes large-up to five times the size of the rootball. Planting in raised beds might also be helpful.

Light
Trim off the trees’ lower branches to allow for increased light and movement of air. Ifthe canopy is too dense, selectively remove some of the trees, leaving only the most desirable.

Water
During periods of drought, large trees hog water from surrounding plants, and many small plants will not tolerate dry shade so supplemental watering may be necessary. Take the time to find the right level and frequency of watering. Check the soil moisture around new plantings frequently, since underwatering and over-watering can both present problems. Keep in mind that frequent, light waterings can do more damage than good, as they encourage roots to grow toward the surface.

Fertilization
Plants under deciduous trees generally require more frequent applications of fertilizer, to compensate for the nutrients used by the trees. Many types of fertilizer are available, including slowrelease, granular, and organic fertilizers. Check with Mahoney’s fertilizer sales specialists to determine the type that’s right for you.

Surface Roots
Where surface roots are a serious problem, create a rock and stone garden, with accent pieces such as statuary, a bench, and groupings of container plants.

Tomato Planting Tips

Tomatoes are by far the most popular home-grown fruit or vegetable. Here are some tips to help ensure that you get the most out of your Tomato plants.

  • Turn the soil in your vegetable bed and amend with organic matter. Try Coast of Maine’s Lobster compost blend. You may then want to fertilize the soil with Tomato-Tone by Espoma or Tasty Tomato by Bradfield Organics.
  • Planting your tomatoes in a different part of the garden each season is a good idea as many tomato diseases remain in your soil throughout the winter. Replace the soil in containers as well.
  • Remember, if you are container planting, the planting environment is provided entirely by you. If a series of dry hot weather ensues, your watering habits in the container must be increased to accomodate the weather. The soil and its nutrients must also be provided. Staking must be done just as often to prevent the fruit from rotting at the base of the plant.
  • Plant the tomato deep enough so the lower leaves touch the surface. This allows the planted stem to develop a larger root system and promotes a healthier plant. Once the tomato has become established, a water-soluble liquid fertilizer will increase how prolific your tomatoes will be. Try Neptune’s Harvest Organic fertilizer and use bi-weekly throughout the season.
  • Unless you have purchased a bush variety such as Better Bush or Patio tomatoes, your plants will need to be staked regardless of whether they are in a container or in the ground. At Mahoney’s, we carry a vast selection of staking options from attractive bamboo stakes to easy-maintenance tomato cages.