Here are some problems to be on the look out for:
|Early Blight on tomato|
|Septoria leaf spot|
Root rot fungus is directly related to overwatering. Management of root rot requires soil improvement, and proper watering. Avoid overwatering. Always allow the soil around plants to dry out a few inches below the surface before watering again. Improve moisture conditions around the crown of the plant by exposing it to drying conditions. Remove some of the mulch or pull it back from the base a few inches. However, do not expose roots.
Powdery mildews are characterized by spots or patches of white to grayish, talcum-powder-like growth found on leaves, flower buds and stems. Once the disease becomes a problem:
- Avoid overhead watering to help reduce the relative humidity in the canopy of the plant.
- Remove and destroy all infected plant parts (leaves, etc.). For infected vegetables and other annuals, remove as much of the plant and its debris in the fall as possible. This decreases the ability of the fungus to survive the winter. Do not compost infected plant debris. Temperatures often are not hot enough to kill the fungus.
- Selectively prune overcrowded plant material to help increase air circulation. This helps reduce relative humidity and infection.
Lawn and Flower Beds:
Sprinkler Systems should be adjusted. Do not continue to water on a scheduled basis until water is actually needed. Let Mother Nature be your sprinkler!
Powdery mildews can be found on shrubs, grass, and flowers and are characterized by spots or patches of white to grayish, talcum-powder-like growth. Control is the same as for vegetables.
All Around the House:
Fight the Bite Colorado recommends the following:
- Check for items that might hold water including wheelbarrows, tires, hubcaps, toys, garden equipment, pool covers, tarps, plastic sheeting, pipes, drains, boats, canoes, recycling bins and trash.
- Remove standing water in ponds, ditches, clogged rain gutters, flower pots, plant saucers, puddles, buckets, jars and cans. Completely change water in birdbaths and wading pools weekly. Drill drainage holes in tire swings.
Stock ornamental ponds and fountains with fish that eat mosquito larvae.
- Avoid mosquitoes by staying indoors at dawn and dusk when they are most active.
- Wear long-sleeved shirts and long pants while outdoors.
- Apply insect repellent that contains DEET. Follow directions carefully.
Install or repair window and door screens to keep mosquitoes out.
For help with these or other garden problems, call the Garden Hotline at Jefferson County CSU Extension at 303-271-6620.