Squash Bug – How to control

Squash Bug Description: Up to 5/8″ long. When newly hatched, they have reddish heads and legs, and green bodies. Later, heads and legs turn black, and the body turns a light to dark gray. They suck sap from leaves of all vine crops, causing rapid wilting which becomes black and crisp. During early part of growing season, vine crops are […]

Spinach Leafminer – How to control

Spinach Leafminer Description: Adult is a small black and yellow fly (seldom seen).The adult fly lays eggs on underside of leaves; tiny yellowish larvae (1/8″ long) hatch and tunnel inside leaves. Several generations develop each summer. It is the most destructive pest of spinach; also infests red beets. Tunnels cause whitish dead areas, making the leaves undesirable; plant growth may […]

Sooty Blotch and Fly Speck (Apples & Pears)

Sooty Blotch and Fly Speck (Apples & Pears) Description: These two diseases often occur together because they have similar, and numerous, wild hosts. Sooty blotch and fly speck are most likely to develop when temperatures are between 65° and 80°F and when humidity is high. This combination occurs most frequently when nighttime temperatures remain above 65° to 70°F during summer, […]

Soft Rot (Onions)

Soft Rot (Onions) Description: Soft rot can cause significant losses in stored onions. It is spread by splashing rain and by mechanical or insect damage. The bulb is infected through the neck tissue of maturing plants. Solution: Spray Soap-Shield® Fungicidal Soap on plants when warm, wet/humid conditions prevail, right up to time of harvest. Allow onion tops to dry before […]

Slugs – How to control

Slugs Description: : Brown to grayish, up to 2″ long, looks like a snail without a shell. Eggs are laid in jelly-like masses under debris in damp areas. Slugs live a year or more and develop slowly. In spring, they are one of the first pests to feed on seedlings and ornamentals, eating large holes and leaving a slimy trail. […]

Septoria Leaf Spot (Tomatoes)

Septoria Leaf Spot (Tomatoes) Description: The most destructive of all tomato problems Small brown spots appear on bottom leaves first. Leaves gradually turn yellow and die as the disease works its way upwards. Premature death of vine significantly reduces tomato production. Solution: Use Soap-Shield® Fungicidal Soap or Copper Dust starting after setting out plants, then every 7-10 days. Apply more […]

Scale – Plant, Leaf – How to control

Scale Description: Scales resemble bumpy bark or fine ash on branches of fruit trees and shrubs. Wherever they feed, they cause a reddening of tissue, usually several times the diameter of the scale. On fruit this spot is very obvious. When infested the limbs lose vigor and die, usually in the top of the tree first. The removal of sap […]

Scab (Cucurbits) – How to control

Scab (Cucurbits)   Description: Scab is seedborne, and it also survives in the soil. Scab usually develops in warm weather after midseason, when wet weather conditions exist. Spores can spread over long distances when the air is moist. Solution: As with many diseases, it helps to plant cucurbits where other cucurbits have not been planted for at least two years. […]

Rust (Roses) – How to control

Rust (Roses) Description: Although rust is widespread, it is most consistently a problem in western states. Yellow “rust” spots appear on the topsides of leaves during cool weather in spring or late fall. Infected leaves become twisted and dry. Spores infect leaves when rain, dew or fog occurs at temperatures from 55° to 75°F. Solution: When rust is first noticed, […]

Root-Knot Nematodes, Carrot – How to control

Root-Knot Nematodes Description: So-called “eel-worms” are only 1/50″ long, with thin, translucent bodies. Over 990 species of plant-attacking nematodes are known. Occurring naturally in large numbers throughout the U.S., especially in the Southeast, they plague vegetables, ornamental plants and trees. Infested plants are usually stunted, lighter in color, and lower in yield than healthy plants. Roots have swellings, galls, or […]