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Tribune-Review Horticulturist Jessica Walliser co-hosts 'The Organic Gardeners' at 7 a.m. Sundays on KDKA Radio. She is the author of several gardening books, including 'Grow Organic' and 'Good Bug, Bad Bug.' Jessica Walliser can be reached via e-mail

Garden Q&A: Leafminer damage easy to identify

By Jessica Walliser
Q uestion: Our American holly tree has squiggly lines on some of the leaves. It looks like some kind of bug is burrowing around inside ...

Fighting the scourge of cucumber beetles and deadly bacterial wilt

By Jessica Walliser
Cucumber-planting season is upon us. Whether you grow cukes via seeds planted directly into the garden or from nursery-grown transplants, you may find yourself dealing ...

Garden Q&A: Simple layering makes propagating nearly foolproof

By Jessica Walliser
Question: I’d like to propagate an existing snowball bush in my yard. How would you recommend going about doing that? Thanks! Answer: There are ...

Garden Q&A: Keep leaf tier caterpillars out of hydrangeas

By Jessica Walliser
Question: I have an ‘Annabelle’ hydrangea, and I recently noticed that several of the new leaves are curled closed. When I peeled them open, there ...

For beet lovers, there’s lots of variation in taste and color to be grown

By Jessica Walliser
I grew up in Pennsylvania Dutch country, so, at every family gathering, there were pickled red beets. In fact, until I was an adult, I ...

Walliser: Sawfly larva knows what it likes

By Jessica Walliser
Question: I planted a couple perennials, including two columbines. Last summer, one of the columbines disappeared. The leaves were completely eaten. When it ...

Tomatoes come in all flavors ... as well as shapes, sizes and colors

By Jessica Walliser
Here in Western Pennsylvania, we’re crazy for tomatoes. Thousands of gardeners will head outside in just a few short weeks to plant these juicy, acidic ...

Garden Q&A: Asparagus pays lasting dividends

By Jessica Walliser
Q uestion: I’m interested in planting some asparagus this year. Do you have any tips for growing it successfully? Are the “all male” varieties really ...

Gardening in raised beds has lots of benefits, but also challenges

By Jessica Walliser
There are lots of benefits to gardening in raised beds. Because they stand a bit higher than the existing soil, they’re often drain better after ...

Walliser: Spacing, circulation vital in strawberry patch

By Jessica Walliser
Question: We have trouble with our strawberries developing a gray, fuzzy mold and then rotting on the ground every year. Is there something we can ...

Here’s some straight dope on keeping carrots from growing crookedly

By Jessica Walliser
Misshapen carrots are the nemesis of many gardeners, and though straight carrots don’t taste any better than gnarled or forked ones do, they sure are ...