Spokane County Extension

Garden - Lawn - Landscape


Fertilize lawns early this month for the last time before September. Lawns go somewhat dormant in the heat and do not need fertilizer.

Don't mow your lawn in the same direction every time. Vary your path so that the turf and soil don't form compacted mower ruts. During very hot weather, mow higher than usual to shade and cool grass roots.

Water the lawn according to temperature and soil moisture, not the calendar. Water deeply when the top one or two inches are dry. Saturate the soil to a depth of four or five inches.

Water gardens and lawns in the early morning when temperatures are low to minimize evaporation.

Deep water trees and shrubs a couple of times during hot weather by letting a hose run slowly enough for the water to soak into the ground directly beneath the plant.

Good watering methods will help plants flourish in spite of the hot weather. Check plants frequently and water enough to get water to the root zone. Avoid overwatering and saturating the soil, which encourages root rot.

Do not fertilize trees or shrubs, especially fruit trees, after mid-July. Fertilizing encourages new growth that will not harden off in time to avoid winter injury.

To discourage mites, hose dust from evergreens, leafy shrubs and hedges. Daily harsh water sprays will dislodge dust and mites, preventing a build-up of either.



Keep weeding! Weeds compete with desirable plants for nutrients and water.

Side dress vegetables and annual flowers with fertilizer.

All annuals and many perennials will continue to flower after dead blossoms are removed. Keep faded flower blossoms pinched off.

Pull out and destroy tomato and potato plants that are infected with bacterial or fungal leaf spots before the problem spreads.

Start harvesting herbs (for kitchen use. Frequent cutting will encourage new growth.

Harvest onions and garlic. When their stalks begin to yellow, bend them down flat on the ground and wait for them to yellow completely. Then carefully dig the bulbs and allow them to dry for a day or two in a shaded spot. Brush dirt from the skins and bring indoors to store in a cool, ventilated, dry place.

Pick beans and summer squash before they get oversized and tough. This allows the plant to save energy for ongoing production.

Blossom-end rot (bottoms of tomatoes turn black and start to rot) is caused by a calcium deficiency in the plant. It is aggravated by fluctuating soil moisture. Use mulch to conserve water and help maintain even soil moisture.

Prune summer-bearing raspberries by cutting out canes that fruited this year.

Record harvest dates of vegetables and any particular growing problems, including insects and pests.




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WSU Extension Spokane County , 222 N Havana, Spokane WA   99202-4799, 509-477-2048, Contact Us