Q. Do insect sprays lose their effectiveness by being carried over from the previous year? Bill McMonagle – Tacoma, WA A. Yes. Although manufacturers are not required to put an expiration date chemicals can slowly loose their effectiveness over time. In most cases you can expect to get 1-3 year shelf life from the average…
Year: 2005
Training Grapes on Arbors
Q. Hello Peter, I have four grape vines, about eight feet long, that I planted a year ago. I want to have them fill in a grape arbor. Right now they are full of small leaves all along the vine. My question is, “What do I do to get the vines to spread out over…
Basic Pruning Questions
Q . Where should pruning cuts be made above the node, below a node, or between the nodes on a plant. Ruth Derby – Paden City, WV A. Pruning cuts below the nodes are too low, pruning cuts between cuts are too high and pruning cuts above the node are, to quote a famous fairly…
Deciduous Rhododendrons
Q. Peter, have little question. These deciduous Azaleas. Are there deciduous Rhodys too? I see these very vibrant Peach colored ones blooming right now. I bought some Exubury azealas and they are blooming a yellowish color and are very beautiful. Now do this turn into that peach color later or do I look for a…
Tree Transplanting
Q. Is it too late to replant trees? I have 3 year old apple, peach,& cherry trees that I want to replant in other areas in my yard? How can I do this safely or when is the best time to do this? Karin Davidson – Lakewood, WA A. It is not too late to…