Rosie Lerner

rosie@purdue.edu

716 articles by this author

Posts List

Hibernation for Roses

Most gardeners don’t think about burying their roses, but that’s essentially what they should do to protect them from winter’s extremes. Similar to hibernation in animals, roses and other woody plants go through a dormant (rest) period in the winter. The first step to winterizing roses is to keep them healthy through the growing season. Gardeners should protect roses from insect and disease damage and maintain adequate fertility and moisture. After several killing freezes in […]
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Saving Seeds From the Garden

Collecting seeds from garden plants to plant next year may seem like a good way to save money, but you may be in for a surprise. Some seeds can be saved from year to year with good results, particularly the old-fashioned cultivars. But modern hybrid cultivars rarely breed true from collected seed. To get that disease-resistant tomato or frilly double petunia, two or more plants with desirable characteristics were crossbred. The seed from these hybrid […]
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Fall Ideal for Planting Trees

Because spring is the time for new growth, most people think of planting trees and shrubs then. But cool temperatures and adequate rainfall make fall a good time to plant as well. The soil may be warmer and less damp than in the spring, and you may have more time to get the job done in fall. Fall-planted stock does demand extra attention. Plants may not have enough time to establish a good root system […]
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October “In The Grow”

Q. Three years ago, I transplanted a couple of peony bushes, which were nice and green, from a neighbor’s yard. Last year, they were green in the spring but the leaves started turning dark brown, some black, with no blooms. This year was the same, except they had a few blooms before turning brown and black. Why is this happening, and what can I do to save them? – Jane Clary, Rockport, Ind. A. Peonies […]
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Growing Trees from Seed

Many trees can be grown from seed that is collected in your own backyard, but you should be prepared for what lies ahead. Plants may not come true from seed, so don’t be too disappointed if the new plants are not what you expected. In addition, many woody plant seeds require special treatment before they can germinate and grow new plants. Many of our modern ornamental and fruit trees must be propagated by means other […]
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All America Winners for 2001

Nine new garden plants have been awarded the prestigious honor of being an All America Selection (AAS) for the year 2001. These new cultivars have been judged as superior in their class based on their performance in test gardens all over the country. For the flower garden, the first award winner is Zinnia “Profusion White,” a daisy-like, white zinnia with good resistance to powdery mildew. The sun-loving plants spread 12-24 inches and are loaded with […]
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September “In The Grow”

Q. My rhubarb has some type of bug. It’s planted at the edge of my garden. It’s not as hearty as it was in the past, and now it has brown spots. – Phyllis Clark A. Crown rot can cause brown, sunken, water-soaked spots on the base of the leaf stalks. Leaves yellow, and stalks collapse and die. The disease thrives in waterlogged, heavy soils and attacks the crown and base of the stems. In […]
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Doing Battle With Weeds

No matter whether the weather is cool or hot, wet or dry, gardeners must do battle with weeds. By definition, a weed is any plant that grows where it is not wanted. Despite having a number of weapons to conduct this battle, the weeds seem to win as least as often as we do! The best weapons for the home garden and landscape include tools, such as the hoe and rototiller. There are quite a […]
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Transplanting in Summer Not the Best

Today’s mobile society often lands gardeners in the predicament of moving away from their beloved gardens at a time of year that is less than ideal for transplanting. Devoted gardeners just hate the thought of leaving all of their beautiful flowers behind. Ideally, the time to move most perennials is either spring or early fall. The hot, generally dry weather of summer is about the worst time of year to move any plant. But, sometimes, […]
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August “In The Grow”

Q. I was given a large hibiscus plant as a house-warming gift. Several months ago, the leaves started turning brown, and I found tiny, white, flying bugs on both sides of the leaves. I bought a pesticide that was labeled for hibiscus and control of whitefly and mealybugs. I am on my second can of the spray, but the plant has not improved. What can I use? -Elois Goerz A. Whiteflies are common pests of […]
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