Rosie Lerner

rosie@purdue.edu

716 articles by this author

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Blooming Out of Sequence

What is that rhododendron doing re-blooming in the middle of October? Well, actually, it might be more correct to think of it as jumping the gun on next spring rather than re-blooming.   Although it happens to some extent many years, there seems to be more reports than usual of blooming out of sequence this fall. Rhododendrons, crab apples and saucer magnolias are the most commonly reported species blooming this fall.   Spring-blooming woody plants […]
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Out of Your Gourd!

It’s that time of year when visions of Halloween conjure up all kinds of ghoulish-looking gourds! While they are traditional decor at Halloween and Thanksgiving, gourds aren’t just for decoration. Gourds date back to 2200 B.C., making them among the oldest cultivated plants in history. They have been used as dippers or containers for grain storage, and other types are edible when young and tender. The term “gourd” is most correctly applied to several species […]
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Q. I have some questions about a ‘Rose of Sharon’ bush I have, which was damaged in the ice storm that we had last winter. I was wondering when would be a good time to trim it, how far back should it be trimmed and how often. Thank you ever so much. — Barbara Huse A. Since plants bloom on new growth, shaping or pruning can be done at any time. Pruning in late winter […]
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Fall Leaves: Litter or Loam?

The hot dry weather experienced throughout much of Indiana is bringing an early leaf drop to many landscape plants. While there is potential for a rainbow of colors, the stressful conditions may make for a less-than-awesome display. For some homeowners, the annual show is overshadowed by chores of leaf raking and disposal. What’s needed here is an attitude adjustment! Autumn leaves don’t have to become trash. On the contrary, they easily can be turned into […]
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Summer’s End Signals Bulb Planting Time

If thinking about the end of summer is getting you down, start planning your spring flowering bulb show. Autumn is the time to plant crocus, daffodils, tulips and many other spring bloomers. Spring flowering bulbs are planted in fall to allow them to establish roots before top growth begins in spring. Planting too early may cause the bulbs to sprout this fall, only to be killed back by winter weather. Planting too late may not […]
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Q. I have a rhododendron bush that looks like it is getting rust on the leaves. I think perhaps something is eating on it. What should I use to control this? Thank you. — Joan Wininger A. It’s important to determine if the rust is a problem or a natural occurrence. Many rhododendrons have a natural, rusty-brown, scaly appearance, particularly on the underside of the leaf. Rhododendrons may also be showing leaf scorch at this […]
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Dividing Iris

Whether you’re looking to expand your planting of iris or just need to rejuvenate an older planting, late summer through early fall is a good time to lift and divide iris. Dividing every 3-5 years will help rejuvenate the planting and encourage more blossoms for the subsequent years. Most iris plants spread by means of underground stems called rhizomes. These rhizomes become too crowded over time, resulting in reduced flowering. By lifting and dividing the […]
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Onions Can Bring You To Tears

As summer is nearing its end, gardeners will soon be harvesting their onions, which may just bring tears to their eyes.   Onions are ready to harvest when the tops bend over at the neck. Gently lift the plants out of the ground to collect the bulbs and avoid bruising the tender skins. For short-term storage, spread the plants in a single layer, leaving the tops attached, and air dry 2-3 days in a well-ventilated […]
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Q. I live in the country and have a gopher problem. They are digging holes around the bird feeders. I have even seen them in the bird feeders. They are digging so much that the pipes the bird feeders are on are about ready to fall down. — Barbara La Cross, LaOtto , Ind. A. Begin by going to Purdue Animal Damage Control Web site at http://www.entm.purdue.edu/wildlife/wild.htm to make sure you’ve identified the culprit properly. There are […]
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Squashkins and Cucumelons?

As you plant out your vegetable transplants and seeds in the garden, have you ever wondered what happens if you grow a zucchini squash next to a giant pumpkin? Do you end up with squashkins? Will planting cucumbers next to watermelons yield cucumelons?   These two examples are not likely to cross-pollinate one another, so the answer is probably “no.” Plants of different species usually do not cross-pollinate in nature. Cross-pollination does frequently take place […]
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