Gelsemium sempervirens

Water Gelsemium sempervirens carefully and consistently. This jessamine should be watered deeply during dry weather, especially during hot, dry periods. Avoid overwatering and make sure that the soil is allowed to dry between waterings.

Gelsemium sempervirens prefers to be planted in areas with full or partial sun, where it can receive six or more hours of sunlight a day. In particularly hot climates, partial shade in the hottest period of the day is beneficial.

Gelsemium sempervirens is best grown in USDA Hardiness Zones 8A-11, but can usually withstand temperatures down to -7.8°C (20°F). In colder climates, it should be kept outdoors in the summer and brought in before temperatures drop below freezing.

Gelsemium sempervirens loves humid environments, so misting its leaves frequently is beneficial. You can also add a humidifier to the area in the winter when the air is particularly dry.

Gelsemium sempervirens prefers a rich, well-draining soil. Use a slightly acidic potting mix such as peat moss, sand, and perlite, and mix in some organic material such as compost for added nutrition.

Fertilize Gelsemium sempervirens with a balanced fertilizer such as 10-10-10 at the beginning of the growing season and again in the middle of the growing season. Avoid over-fertilizing, as this can burn the roots of the plant.

Gelsemium sempervirens is generally free of serious pest infestations. The most common pests are spider mites, aphids, scales, and white flies. To get rid of these pests, use a natural insecticide. For spider mites, aphids, and scales, use a soapy water solution. Whiteflies can be treated with neem oil. For more persistent pest problems, use horticultural oils.

Gelsemium sempervirens should be repotted every two to three years, or when it becomes root bound or pot bound. Repotting should be done in the spring before the plant begins to leaf out, using a well-draining potting mix. Make sure the pot has plenty of drainage holes, and be sure not to use too small of a pot.

Pruning Gelsemium sempervirens is relatively easy and should be done consistently as part of regular maintenance. Pruning should be done in late winter or early spring, before the plant leafs out. Prune off old, dead branches to encourage new, healthy growth.

Mulch should be applied around Gelsemium sempervirensvines to help retain moisture and reduce weed growth. A layer of mulch two to three inches deep should be sufficient.

Gelsemium sempervirens can be propagated from cuttings in the summer. Take semi-woody cuttings that are three to four inches long and place them in a rooting hormone. Then, place them in a potting mix and keep moist. Roots should form within a few weeks.

Gelsemium sempervirens needs some support in order to properly climb. A trellis or other support structure should be securely attached to the wall or fence of your home.

Gelsemium sempervirens does not require a rest period, meaning it can be kept in a warm environment year-round without reduced light or lower temperatures during fall or winter months.

Gelsemium sempervirens is toxic to cats, dogs, and horses. All parts of the plant are toxic and can cause serious illness or death. All parts of the plant should be kept well out of reach of pets.