Perennials and Vines: Q– Why are my bearded iris leaves dying? (Later in month) why are some of the rhizomes mushy and smelly? A– Probably you have an infestation of iris borer. See information sheet in this section.
Q – What is causing the holes in my Hosta leaves? A – Probably slugs or snails. See Information Sheet. Also, we recommend the product Sluggo. Q– Why is my clematis wilting? A– A disease called clematis wilt may be at fault. Consult with the Nursery Dept. for current recommendations. However, tiny tears in the stem caused by high winds may be the cause. Cutting back the stems may be enough and the plant itself can be saved. Q– What is that bright red bug/What is defoliating my Asiatic and Oriental lilies and fritillaria? A– Look for red eggs under leaves, a yellow-brown to orange red larva, or a bright red bug. See handout on Lily Leaf Beetle. Spraying “Sevin” works well. Roses: Q- What are those growths at the base of my rose bush or on the stems? Some of them are hard and rough, and others are smooth and spongy. A– See Information Sheet on Crown Gall. Q– What should I be doing now to care for my roses? A– Deadhead the blooms as they go by, use preventive sprays regularly according to
Related Questions
- Perennials and Vines: Q– Why are my bearded iris leaves dying? (Later in month) why are some of the rhizomes mushy and smelly? A– Probably you have an infestation of iris borer. See information sheet in this section.
- Dick writes: The leaves on my muscadine grape vines are turning yellow with brown spots. What should I do?
- I found large grubs in bearded iris rhizomes when dividing them in late July. What are they?
