Q. My iris were beautiful with lots of flower buds this year, but just about the time they were in full bloom, the heavy rains came and knocked all the tall, blooming stems to the ground. Is there any way to prevent this? — Wendy Lacrosse, Fort Wayne, Ind. A. Many plants can be pinched early in the season to increase branching and reduce lodging, which is the fancy word for crashing to the ground. […]
Q. I have 6-year-old flowering dogwood trees that have never bloomed. The foliage looks healthy each year. What do you suggest? — Carrie Ehresman, West Lafayette, Ind. A. It does take a dogwood a few years to become established, and we don’t make the job any easier for them. Drive through Southern Indiana and notice where the dogwoods are growing. They’re nestled into the edge of the woods where they receive shade and protection from […]
Q. My bearded iris looked big and healthy but barely bloomed. What could be wrong? — Melissa Eddy, Lafayette, Ind. A. Several factors may contribute to a lack of iris flowers. The most surprising is that the rhizomes have to be exposed to sun. They should be planted horizontally, with only the lower half in the soil. It’s easiest to dig a hole and then create a ridge for the rhizome to lay on. Cover […]
Q. I have a small greenhouse that I use to winter over plants and to start new ones from seed in the spring. Each year I get whiteflies. I have bought commercial sprays from lawn and garden departments, but even with repeated applications, the whiteflies seem to persist. What is the best method to rid my greenhouse of these pests? Is there a prevention I should implement? Are there certain plants that attract whiteflies? — […]
Q. We decided to build a sunroom this winter. Unfortunately, this means moving some hosta. Can I transplant them at this time of year? Some others are planted where they will be run over by heavy machinery. Since they’re dormant, will they survive? — Jeff All, West Lafayette, Ind. A. Transplanting in the winter can be hard, cold work. If the ground is not frozen, dig up each hosta clump, and sink it in the ground […]
Q. I am a resident of Orange County, just outside of Paoli. I recently noticed that my red horse chestnut tree, which had previously lost all of its leaves due to drought, has sprouted several red flowers. Some leaves are coming out and MANY buds are swelling. Many buds are not swelling, and I hope they stay that way. The drought tricked the tree into early dormancy, and now the recent rains have awakened the tree […]
Q. We need your expert help concerning our Stanley plum tree. We planted the tree four years ago. The catalog said it is self-pollinating. One year we had two plums. Another year we had none. This year, I found 10 on the ground. All were green and small. What is wrong? The closest other tree is an old persimmon, and it is always loaded with fruit. Do we need fertilizer? If yes, what kind? Did we […]
Q. I love red geraniums. I would like to know how one might start plants, and when you would start them. Also, what is the best plant food to use to grow beautiful geraniums? — Tom Schmitt A. The two main methods of propagating geraniums are by cuttings or seeds. Cuttings usually are taken from outdoor geraniums in late summer or early fall. Cut off 3-4-inch shoots, and remove the leaves on the lower part of the […]
Q. My husband and I planted gallon-sized azalea plants last spring. Should they be pruned this year? If so, when and how much? We understand that they are an acid-loving plant. Since sulfur is acidic, can that be used? Thank you. — Deanna Freeman A. Typically, newly planted shrubs do not need much pruning except to cut out dead wood, which you can do at any time during the year. Improper pruning can cause a lack of […]
Q. An insect is killing my schefflera. It gets white, fuzzy-looking places on it that feel soft, and you cannot see the insect that is working on it. Finally, it will kill the leaf if not removed. I wash the leaves from time to time with soap and water, and last time a little bleach. It works for a while. I even tried a fungus product and worked it in the soil after giving the plant […]