Q. I have two Wisterias, outside of the apt., I just moved into. They are growing from each side of a overhanging trestle When is the best time to prune them and how? Thank you Donna Beets – Upper Lake, CA A. Prune them immediately after they finish blooming. This is to ensure you don’t…
Year: 2005
Fresh wood chips controversy
Q. Will it hurt evergreen trees to put woodchips around them as mulch if the chips are from recently chipped up trees and branches (green)? Bob Heacock – Harleysville, PA A. Over the years there has been some controversy over using fresh wood chips as you describe in the landscape. The issues of soil nitrogen…
Photinia leaf drop
Q. Why has my photinia hedge of 20 years losing it leaves? They are turning brown, curling up and falling off. Barry Christensen – Puyallup, WA A. Well twenty years is a good run if this is the first time you have had problems with your photinia. Leaf drop is occurs in the advanced stages…
Root rot on peonies & wet soil
Q. I have a section of a planting bed two 1/2 wide running north & south along the west side of a fence. It gets plenty of afternoon sun. The problem is that the Irises, which used to bloom there haven’t bloomed in several years even after lifting & dividing. Also I tried some Peonys…
Bud blast on tulip tree flowers
Q. I have a 30′ tree I think it is called a “tulip” tree because its flat green leaf shape resembles a flat open tulip. the tree also has a type of flower that resembles a fluted kings crown. It tapers up in a yellow brown and has a rim od yellow. It is quite…