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Browse by Author: Jeanine Davis
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Herbicide Carryover in Hay, Manure, Compost, and Grass Clippings

By: Jeanine Davis, Sue Ellen Johnson, Katie Jennings

Many farmers and home gardeners have reported damage to vegetable and flower crops after applying horse or livestock manure, compost, hay, or grass clippings to the soil. The symptoms reported include poor seed germination; death of young plants; twisted, cupped, and elongated leaves; misshapen fruit; and reduced yields. These symptoms can be caused by other factors, including diseases, insects, and herbicide drift. Another possibility for the source of these crop injuries should also be considered: the presence of certain herbicides in the manure, compost, hay, or grass clippings applied to the soil.

Winterizing the Herb Garden

By: Jeanine Davis Horticulture Information Leaflets

If treated properly, many herb plants will survive in the garden for a number of years. Others are sensitive to frost or severe cold weather and must be brought indoors, protected, or replanted each year. Annual herbs will be killed with the first hard frost in the fall. Remove dead plants in order to minimize overwintering insects and disease problems. Some frost sensitive herbs, such as basil and geranium, can be brought indoors for the winter. Take cuttings to root or pot the entire plant.

Harvesting and Preserving Herbs for the Home Gardener

By: Jeanine Davis Horticulture Information Leaflets

Herbs should be harvested when the oils responsible for flavor and aroma are at their peak. Proper timing depends on the plant part you are harvesting and the intended use. Herbs grown for their foliage should be harvested before they flower. While chives are quite attractive in bloom, flowering can cause the foliage to develop an off-flavor. Harvest herbs grown for seeds as the seed pods change in color from green to brown to gray but before they shatter (open). Collect herb flowers, such as borage and chamomile, just before full flower. Harvest herb roots, such as bloodroot, chicory, ginseng, and goldenseal, in the fall after the foliage fades.

Bloodroot (Sanguinaria canadensis L.)

By: Jeanine Davis, Jackie Greenfield Horticulture Information Leaflets

This publication discusses growing and harvesting bloodroot, a spring wildflower used to produce natural red, orange, and pink dyes, in North Carolina. It can grow in full sun, but is more often found in semi-shaded, light-wooded areas with moist, acidic soil. The root, consisting of a thickened rhizome covered with fibrous roots, is known for its reddish-orange color.

Commercial Luffa Sponge Gourd Production

By: Jeanine Davis Horticulture Information Leaflets

Luffa are tropical, vining plants that produce large fruits similar to cucumbers. When young and small the fruit can be cooked and prepared like summer squash. When the fruit mature, they have a rough, fibrous interior which is referred to as the sponge and is used to make a wide variety of products. Currently, luffa sponge products are most popular as personal care products and are readily available in the cosmetic and bath sections of department stores, discount stores, pharmacies, and specialty shops. This factsheet covers how to plant, harvest, and process luffa gourds in a temperate environment.

Black Cohosh (Actaea racemosa L.)

By: Jeanine Davis Horticulture Information Leaflets

Black cohosh is a member of the Ranunculaceae family. It is a native medicinal plant found in rich woodlands from as far north as Maine and Ontario, south to Georgia, and west to Missouri and Indiana. In North Carolina it can be found at elevations up to 4,000 feet and is most common in the western part of the state. It is an herbaceous perennial reaching a mature height of over four feet tall and can grow 18 to 22 inches per month during the growing season.

Cultivation of Ramps (Allium tricoccum and A. burdickii)

By: Jeanine Davis, Jackie Greenfield Horticulture Information Leaflets

Ramps, also known as wild leeks, are native to the eastern North American mountains. They can be found growing in patches in rich, moist, deciduous forests and bottoms from as far north as Canada, west to Missouri and Minnesota, and south to North Carolina and Tennessee. In early spring, ramps send up smooth, broad, lily-of-the-valley-like leaves that disappear by summer before the white flowers appear. The bulbs have the pleasant taste of sweet spring onions with a strong garlic-like aroma.

Commercial Goldenseal Cultivation

By: Jeanine Davis, Joe-Ann McCoy Horticulture Information Leaflets

This factsheet covers commercial goldenseal production in North Carolina, a highly valued medicinal herb which has been collected from the forests in North America for hundreds of years. The historical range for goldenseal in the United States was very broad, ranging from as far north as Vermont and Wisconsin, south to Alabama and Georgia, and west to Kansas. It can still be found growing in patches in moist, rich, hardwood forests in much of this area.

Understanding the Relationship between THC and CBD in Hemp

By: David Suchoff, Jeanine Davis, Margaret Bloomquist, Maggie Short

This publication discusses recent research that clarifies the relationship between CBD and THC produced in floral hemp. This information can help producers adhere to USDA compliance thresholds.

Pole Bean Production

By: Jeanine Davis Horticulture Information Leaflets

In North Carolina, pole beans are grown commercially in the mountain counties and, on a limited scale, in a few of the eastern counties. They are produced in home gardens throughout the state. With the rising interest in heirloom vegetables, pole beans are increasing in popularity. Pole beans are grown for their distinctive flavor, long pods, high yield, long harvesting season, and high price.

Organic Sweet Corn Production

By: Jeanine Davis Horticulture Information Leaflets

Many organic vegetable farmers are interested in producing sweet corn. Organic sweet corn can be grown in North Carolina and throughout the Southeast, but special considerations for variety selection, insect and disease control, economics, and markets must be made for it to be a profitable crop.

Hemp Leaf Tissue Nutrient Ranges: Refinement of Reference Standards for Floral Hemp

By: David Suchoff, Michelle McGinnis, Jeanine Davis, Brian Whipker, Kristin Hicks

As a newly legal crop, little information exists about optimum nutrient levels in hemp. This publication provides additional information on hemp leaf tissue nutrient ranges from a survey conducted between 2017 and 2020.

2019 North Carolina Hemp Strain Testing Results - Rowan County

By: Angela Post, Jeanine Davis, Margaret Bloomquist, Katherine Learn, Ryan Heiniger

This publication provides the results of a 2019 Rowan County Hemp Strain Test that was conducted at the Piedmont Research Station in Salisbury, NC.

2019 North Carolina Hemp Strain Testing Results - Rowan County

By: Angela Post, Jeanine Davis, Margaret Bloomquist, Katherine Learn, Ryan Heiniger

This publication provides the results of a 2019 hemp strain test conducted in Rowan County at the Piedmont Research Station in Salisbury, NC.

2019 North Carolina Hemp Strain Testing Results - Henderson County

By: Angela Post, Jeanine Davis, Margaret Bloomquist, Katherine Learn, Ryan Heiniger

This publication provides the results of a 2019 Henderson County Hemp Strain Test that was conducted at the Mountain Horticultural Crops Research and Extension Center in Mills River, NC.

Offsetting Drought for Small-Scale Vegetable Production in North Carolina

By: Jeanine Davis, Robert Evans, Garry Grabow, Bill Jester, Billy Little, Allan Thornton, Jonathan Schultheis

A good source of water is a necessity for producing quality vegetables. During periods of drought, crop diversification and mulches can be used to cope with drought situations, but nothing will substitute for the timely application of water. This publication covers some guidelines for irrigation systems to help offset periods of drought in the Southeast United States.