How to Get Blue Hydrangeas

If you love blue flowers (and who doesn't?), one of the most popular must-have plants for your garden is hydrangea. These versatile shrubs produce giant ball-shape flowers that look stunning in the landscape surrounding your home, as specimen plants in your garden, and make gorgeous (and easy!) bouquets.

See More

Flowering Perennials from Spring to Fall

Turn your garden into a color show spring through fall. Here are 17 easy-to-grow flowering perennials.

View Slideshow

Garden Pictures That Inspire

Garden pictures can provide inspiration. Browse our gallery of garden pictures, including landscape garden pictures, to find the picture of a garden that will give you your perfect landscape.

View Slideshow

Growing Lilies and Daylilies in Your Garden

Daylilies and lilies are two big-impact, easy-to-grow plants for your summer garden.

View Video

How to Grow Potatoes

Growing potatoes is easy, and you'll find the taste of homegrown potatoes much better than that of store-bought versions. You can grow potatoes in just a few easy steps. Learn how to grow potatoes, as well as how to harvest them for maximum flavor.

View Video

Urban Gardens

Living in a space-challenged urban environment shouldn't stop you from enjoying fresh air. Check out these great ideas from some amazing city landscapes.

View Slideshow

How to Get Beautiful Texture in Your Garden

Add beauty and texture to your garden with leafy and flowering perennials, annuals, and grasses.

View Slideshow
Popular in Gardening

Stop Sawflies

Although this pest looks like a worm or a slug, it's neither, and that makes a difference in what control measures work on it.

Sawflies are one of the few insects in the wasp family that feed on plants. The adult resembles a fly or a wasp without a constricted waist. But it's the worm-like larva that causes damage to plants. The adults do not eat and cannot sting.

Identifying the Pest

Some larvae look like caterpillars with three pairs of large legs and seven pairs of smaller false legs. The larvae may appear individually, but often form clusters of dozens of chewing defoliators. It's common to see them lined up along the edge of leaves or needles. When disturbed, they may raise their abdomen and tail end into an s-shape defensive position.

Other sawfly larvae resemble slugs, with a slimy non-segmented body. This group of sawfly larvae usually feeds only on the leaf surface, leaving a skeleton of leaf veins where they feed.

Sawfly Life Cycle

Adult sawflies lay eggs in or on leaves. The larvae hatch out in late spring or early summer and begin feeding. They spin cocoons when fully grown. Some species have only one generation per year; others may have several generations.

Sawfly Control

The best time to control sawflies is early in their larval stage. The natural insecticide spinosad will control sawfly larvae. Conventional insecticides such as malathion are also effective. Bt (Bacillus thuringiensis), which is an effective natural control for true caterpillars, is ineffective on sawfly larvae.

Host Plants

Most sawflies attack only one species or closely related species of plants, and the common name of the sawfly usually includes its host. Examples are:

Ash Sawfly (Blackheaded and Brownheaded)
Dogwood Sawfly
Dusky Birch Sawfly
Elm Sawfly
Larch Sawfly
Loblolly Pine Sawfly
Mountain Ash Sawfly
Oak Sawfly
Pear Sawfly (also known as Pear Slug)
Pine Sawfly (European, Introduced, Redheaded, and Virginia)
Raspberry Sawfly
Roseslug Sawfly
White Pine Sawfly
Willow Sawfly
Yellowheaded Spruce Sawfly

close
close
close
close
close

Loading... Please wait...