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Frequently Asked Questions
|Question - My Azaleas look
bad and the leaves have white spots on the surface of the leaves.
Answer - Sounds like this Azalea has a bad case of lacebug.
In severe infestations, the leaves become almost white, many of them drying
completely and dropping off. The undersides of the leaves are also
disfigured by the excrement and cast skins of the insects. The undersides of
the leaves may also show brown spots or an all over brown coloring.
For a severe infestation, be sure to apply Bonide's Systemic Insect Control
as directed once every 10 days for a total of 3 applications. To prevent
lacewing bug, you must apply Di-Syston systemic granules at least 3 times
per year around April 15th, June 1st and July 4th.
Question - We've had a lot of rain lately and
now there is a white powdery substance on my Lilac leaves. What's wrong and
will it die?
Answer - A thin layer of a
white powdery material is powdery mildew. Infected leaves may
turn yellow and drop off. In late summer, tiny black dots (spore-producing
bodies) are scattered over the white patches like ground pepper. When the
plant shows the first sign of mildew, spray plants with Fungonil.
Cover both surfaces of each leaf thoroughly. Repeat the treatment at
intervals of 7-10 days until the mildew disappears. Usually a mild case of
this mildew will not cause damage to this plant.
Question - The leaves on my Euonymous shrubs
have whitish-yellow spots and some of the leaves are dropping. Is it a
Answer - Actually, no. The
damaged is caused by a small insect called scale. A population of
these critters may produce up to 3 generations during the growing season. An
uncontrolled infestation may kill the plant after a few years. At the first
sight of infestation, be sure to spray with Eight at intervals of
7-10 days apart for a total of 3 sprayings.
Question - What is causing the holes in my Hosta leaves?
Answer - Slugs. To combat your slug
problem, apply Sluggo. Sluggo is a non-toxic slug and snail
bait that can safely be used around pets, wildlife and food crops!
Question - It looks like something is eating my
Weeping Cherry tree and Sand Cherry shrubs. What is it?
Answer - Japanese beetles
love plants in the Cherry family! They can cause a little foliage distortion
but they are easy to control with a spray of Eight insecticide at the
first sign of damage and as they return.
Question - I just planted/transplanted a tree
(in summer) and I have given it adequate water but it is still wilting and
turning yellow. What can I do?
- Frequently, plants wilt or stop growing for a while after being
transplanted. It is a result of roots being cut or injured during
transplanting. This is considered transplant shock. Most
plants normally recover well from a shocked state.
Question - Why is my Alberta Spruce starting to turn brown?
Answer - The common answer is damage from
spider mites. Needles can become stippled and dirty. There may
also be a silken webbing on the twigs and needles. Needles can then turn
brown and fall off. To determine if the tree is infested with mites, hold a
sheet of white paper underneath some stippled needles and tap the foliage
sharply. If mites are present, minute dark green to black specks about the
size of pepper grains will drop onto the paper and begin to crawl around. A
complete generation of mites may be produced in just 17 days, so mites can
rapidly build up to tremendous numbers during the growing season. As soon as
the damage is noticed, control with a miticide such as Kelthane.
Respray 2 more times, 7-10 days apart.
Question - Some of the leaf tips of some trees and shrubs are turning
crispy brown. Is something wrong?
- If these plants are planted in full sun, then it is more than likely
sun scorch. During hot weather, leaves can turn brown at the
edges and between the veins. Sometimes the whole leaf dies. Many leaves may
also drop during late summer. Drying winds, severed roots, little water and
limited soil can also cause scorch. To prevent future scorch, water trees
deeply during periods of hot weather. Also, be sure to place new plants in
the right areas of the landscape depending on light, watering and soil
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