Johnson's Garden Centers Text File document - copyright 2008 PDF file available at http://www.johnsonsgarden.com/tips.html A U G U S T 2 0 0 8 SUMMER CARE The extreme heat of August can stress plants and people. This may be especially true this year because of the consistent rain we had into July. Now, without that constant moisture, plants can be even more shocked and deal with the change by dropping leaves prematurely. There are some cool tips to help our green friends make it through until fall. Mulching around the roots is the first thing. Mulch keeps the root zone cooler, conserves moisture and keeps weeds down. Cedar mulch is the best to use around trees and shrubs; because of its fibrous nature it stays in place well. Cottonseed hulls are good in annual and vegetable beds. They also bind together to stay in place and then can be worked into the soil to improve it between seasons. The soil may be mulched and moist but plants can still tip burn and wilt. Heat and wind can take moisture out of the leaves faster than roots can return it. This is especially true of new plantings. Something that can help is spraying vulnerable plants with Wilt Stop. Wilt Stop is an anti-transpirant which forms a coating on the leaves. This protective coating keeps water in, reducing moisture loss during times of stress. Water plants first, then spray foliage with Wilt Stop. Let it dry for 6 hours before watering overhead. FALL PLANTING Extend the vegetable growing season by keeping existing plants healthy. Fertilize regularly with a light water soluble application of ferti-lome Blooming & Rooting. Continue spraying for diseases and insects if you've had problems. Many vegetables will produce into the fall months if properly fertilized and sprayed. Another way to lengthen the season is by planting a fall garden. Vegetables which can be planted now for fall harvest include: beans, beets, broccoli, cauliflower, collards, cucumbers, carrots, kale, potatoes, lettuce, mustard, radishes, spinach and turnips. Use ferti-lome granular Gardener's Special when planting. LAWN CARE Cool-season grasses will also be struggling now to get used to hot weather. Watch for dry areas and adjust sprinklers to insure good coverage. If your lawn is getting enough water, but is still turning brown, grubs may be at work. Dig under the green grass next to the brown areas and you'll find these 'C' shaped beetle larva. They are small and easy to control now. Apply an insecticide like Dylox, contained in Bayer 24 Hour Grub Control, and water in well. August is the time to start fall lawn renovation if you need to get rid of bermuda. Water and even fertilize bermuda to make it healthy so it will absorb the herbicide better. Spray Hi-Yield Super Concentrate KILLZALL on the bermuda. KILLZALL is non-selective so it will eradicate all the grass in the targeted area. After 1 week, water to green up anything left alive, then 10 days to 2 weeks later spray again. You may need to repeat the process and spray a third time. Once the bermuda is dead you?ll be ready to seed fescue in September. For more information visit our web site at www.johnsonsgarden.com/advice.html. PESTS Euonymus Scale -- those white and brown flecks are insects sucking the color and life out of euonymus shrubs. The most effective time to spray is when there is a new hatching of crawlers. The first set is in June; the second generation hatches in August. So spray in August with Hi-Yield Indoor/Outdoor Broad Use Insecticide, Bayer Advance Garden Power Force Multi Insect Killer or Systemic Insecticide. Webworms -- these insects form unsightly webs around the ends of branches and feed on the leaves inside. Isolated webs can be pruned off. To spray, first rip open the web then use Carbaryl (Sevin) or Hi-Yield Indoor/Outdoor Broad Use Insecticide. Rabbits / Squirrels -- if entire plants are dug up or branches are disappearing, you could have a larger pest problem. One single repellent doesn't seem to work for everyone, but the newer the product the better because the animals are unfamiliar with it. Liquid Fence and Repels All are both scent and taste repellents that, once dry, won't wash off; although you will have to re-spray new foliage.