The Best Flowers for Wet Soil

Turn a wet, poorly drained spot in your yard into a colorful landscape feature with these perennial flowers and ornamental grasses.

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Fall Veggies to Plant Now

Grow these cool-season vegetables and herbs to extend your garden's harvests in spring and fall. This list of vegetables includes seasonal vegetables, green vegetables, non-starchy vegetables, winter vegetables, green leafy vegetables, fall vegetables and more.

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Improve Poor Drainage

Follow these tips to transform a poorly drained area into an easy-care garden.

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Tips and Tricks to Keep Plants Blooming

Deadheading is a popular practice ¿ but do you know all the ways to keep flowers on your plants longer? Follow these easy tips for keeping your favorite shrubs and flowers blooming longer.

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Top Plant Picks for Late-Summer Color

Keep the color coming on strong through the end of the growing season with these easy-care, reliable annuals and perennials.

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Plan for a Gorgeous Fall Landscape

See how two great gardeners -- one on the East Coast and one on the West -- created knock-your-socks-off fall yards -- and learn how you can do the same.

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Best Plants for Rock Gardens

Transforming an unsightly slope or mound in your backyard into a colorful rock garden is easy when you chose the right plants. These amazing, low-maintenance ground huggers don't mind poor soil but do need good drainage to survive. Here's a list of our top plants for rock gardens.

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Stop Leafminers

Thin whitish trails in leaves are a sure sign of leafminers. Use these tips to control the pest in your yard.

Leafminers are immature insects that feed between the upper and lower surfaces of leaves. The adults may be flies, moths, sawflies, or beetles. The female adult lays eggs on the leaf surface. When the larvae hatch they tunnel into the leaf and begin feeding. Leafminers attack all kinds of plants, from vegetables to fruits, flowers, trees, or shrubs, although each species of leafminer usually feeds on only one or two types of plants. In pines and other conifers, the pests are called needleminers.

Click here to see photos of common tree diseases.

Identifying the Pest

Leafminer larvae are tiny, and somewhat flattened to fit inside a leaf. As the larvae feed, they eat the green tissue inside the leaf, leaving a thin, winding trail covered by a papery sheath. The trail may contain small brownish black pellets of insect excrement, and if you look closely you may be able to see larvae. When numerous larvae are feeding in a single leaf, their tunnels may merge, creating large blotches.

Leafminer Control

Because they're protected inside the leaf for most of their lives, it's difficult to control leafminers with insecticidal sprays. However, damage caused by the pest is seldom severe enough to justify spraying except to make the plant look better. For ornamental plants, you can spray a systemic insecticide such as acephate to kill tunneling larvae. Carbaryl, neem, or pyrethrin is effective if sprayed just as the larvae are hatching. If you see large, merged tunnels, the larvae may have already completed their life cycles, making insecticidal sprays pointless.

Control is more important for leafy vegetable crops because feeding by the leafminers damages the edible portion of the plant. Protect vegetables from egg-laying adults by covering the plants with a floating row cover. Secure the edges of the row cover to the ground so that no adults can enter. Remove and destroy affected leaves.

Host Plants

Leafminers may attack many ornamental plants. Some of the preferred hosts are:

Arborvitae
Aspen
Azalea
Birch
Bougainvillea
Boxwood
Butterfly weed
Chrysanthemum
Columbine
Cottonwood
Delphinium
Elm
Holly
Impatiens
Juniper
Lantana
Lilac
Locust
Magnolia
Oak
Pine
Verbena
Water lily

Commonly affected food crops are:

Apple
Beets
Citrus
Garlic
Onion
Spinach
Swiss chard
Tomato

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