Happy Monday everyone!
I hope everyone’s weekend was nice! It seemed to have been good weather for most of my US readers. It has finally gotten hot here at about 83F / 29C, it’s the humidity that throws us into the ‘Feels like 93F / 34C’ category. I’m meeeelting… Haha! OK, I’m going to shut my pie-hole right now as I have some readers in Italy. They are dealing with 104F / 40C Temperatures… Poor Ultan lost his beer!!
There are many species of fungus that cause powdery mildew on plants. Most only infect the leaf surface or stems and do not attack the leaf tissue of the host plant. Powdery mildew is not usually a serious problem, but to avoid severe damage to plants, quick control methods need to be taken.
Many powdery mildews, especially those that attack woody plants, are more unsightly than destructive.
- Good sanitation is highly important to reduce infections the next season.
- Be proactive and purchase disease resistant plants.
- Space the plants properly, in-well drained soils where plants receive good air circulation.
- Dispose of diseased leaves as soon as they drop.
- Do not compost or use as mulch.
- Always avoid working among plants with wet foliage. Stay inside on rainy days!
In mid-June through August, the young nymphs will hatch called scale crawlers, the only time of this insect’s life where it is mobile. The crawlers make their way out to the undersides of leaves, attaching themselves near the main veins to feed. During this time the crawlers nourish themselves with tree sap which produces honeydew, a side product that is a sticky-sweet, and is sometimes mistaken for tree sap. As the honeydew drops from the insects, it coats cars, lawn furniture, and plants below the tree. This creates secondary problems including the attraction of ants and wasps, and a gray-black fuzzy mold called sooty mold that grows on the honeydew.
Some woodies seem to attract the Japanese Beetle (Popillia japonica) like a tween to Justin Beiber, whereas others don’t seem to exist to them. Why is that? Some scientists have experimented as to just what makes a Japanese Beetle want to eat a plant… or not.
Control on a larger specimen is very difficult. It is better to take a few of the control options and work a plan out for the season. If one type of control doesn’t seem to work switch gears, and try another. You may need an application of a systemic insecticide like imidacloprid by a licensed arborist.
Things that attract them: They seem to dislike:
Lightly pubescent leaves Heavy pubescent leaves
Red or burgundy leaves Waxy, or glossy leaves
Slugs and snails live in the shadier venues of the yard, particularly in poorly drained areas, under thick foliage, and within groundcovers. They need this protection, as the sunlight will literally dry them up. This is also why the majority of their feeding occurs during the night.
Slug & snail damage resembles irregular shaped holes in leaves. Other signs are the slimy trails left on the leaves or nearby ground. Some of their favorite plants include; sweet peas, hostas, strawberries, lettuce, potatoes, lupines, and tulips. They tend to not like woodier stems, leathery or thicker leaves, prickly stems, or pubescent leaves, as they are either too difficult to climb or are too hard to eat.
Copyright ~ llex Farrell