Rosie Lerner

rosie@purdue.edu

716 articles by this author

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Early Heat Wave Challenges Gardens and Gardeners

The early arrival of summer’s steamy weather is tough on garden plants and their gardeners. It is really difficult to stay motivated to keep up with garden chores when you’re already dripping with perspiration by 9 a.m.! Although the weeds, insects, diseases and critters don’t seem to have any trouble thriving in this weather, some vegetable crops have trouble producing when under stress. Tomatoes, peppers, melons, squash, pumpkins, cucumbers and beans often drop their blossoms […]
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Q. Some years our potatoes and beets have a pitting or scabbing on the surface. It makes them very unappealing to want to eat them. I think they are OK on the inside. What causes this? A. While it is difficult to diagnose with certainty without seeing samples, there is a disease commonly called potato scab that affects both potatoes and beets. Other root crops, such as radish, rutabaga, turnip, carrot and parsnips, are also […]
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“A Maizing” Sweet Corn

Nothing tastes better than homegrown corn, but, because of its demand for space, sweet corn has traditionally belonged to the domain of large country gardens. Sweet corn plants usually produce only one ear per stalk, possibly two. And because a lot of corn pollen is needed to get a full ear, a large block of plants is usually required to ensure good yields. Poor pollination results in poorly filled ears. But, if you have a […]
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Question and Answer

Q. The last couple of springs we have had this beautiful flower in our bed, with a nodding, bell-shaped bloom checkered with dark maroon and creamy white. We didn’t plant it, and there is only one. Can you tell us what it is, and where we can buy more? A. That would be Fritillaria meleagris, commonly known as the checkered lily or guinea-hen flower. This dainty spring-flowering bulb reaches just 8-12 inches tall, thrives in […]
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Return of the Asparagus!

Asparagus is one of the first vegetables to peer through the cool soil in spring, and what a welcome sight! The heavy snows this past winter provided excellent moisture and insulation for the plants, so the crop is off to a great start. Precisely how to harvest is the subject of some debate among asparagus gardeners. Some prefer to harvest only the very young spear tips. This ensures that only the tender portion of the […]
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Return of the Asparagus!

Asparagus is one of the first vegetables to peer through the cool soil in spring, and what a welcome sight! The heavy snows this past winter provided excellent moisture and insulation for the plants, so the crop is off to a great start. Precisely how to harvest is the subject of some debate among asparagus gardeners. Some prefer to harvest only the very young spear tips. This ensures that only the tender portion of the […]
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Q. I have a lot of black walnut trees in my yard in Carroll County. I was wondering if there is any kind of flowers I could grow around these trees. Most people I know say there is nothing that will grow or survive around these trees. A. While many plants grow well in proximity to black walnut, there are certain plant species that are inhibited by this tree. The causal agent is a chemical […]
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Hydrangea Popular, Yet Confusing

Try to have a discussion about hydrangea among your gardening friends, and you’re likely to start a rather lively debate. What type to grow, when to prune, why doesn’t it flower and how can I change the flower color from pink to blue are among the most frequently asked hydrangea questions. There are many different species of hydrangea, not to mention cultivars of those species. So, these questions are a bit difficult to answer, unless […]
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Q. My mother ordered ever-blooming lilacs, and I would like to have some for my landscape. Can you share with me the site to order these from? A. To the best of my knowledge, there aren’t any lilacs that bloom continuously all summer, but there are a few that may re-bloom in late summer and/or fall. Different species and even cultivars within a species vary in their requirements for developing flowers buds. So an individual […]
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New Vegetable Varieties 2010

What better way to melt the snow than a cozy read through garden catalogs with all their promise of mouth-watering produce for the coming season! Here’s a look at just a few of the new vegetable seed offerings for 2010. Try a few alongside your old standby favorites so that you can compare performance in your garden. Basil ‘Amethyst Improved’ is a dark purple basil with large, thick, curled-down leaves similar to the classic variety […]
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