white swallow-wort

White swallow-wort should be watered when the soil becomes dry to the touch. It is important to water the plant deeply, as shallow watering can cause the shallow rooted plant to dry out quickly. When watering, water until the soil is moist, but not overly saturated. Aim to water White swallow-wort about once or twice a week during the growing season when temperatures remain above 60°F (15°C). In hotter climates, additional water may be needed more frequently. In cooler climates or during the winter months when temperatures drop, water less frequently.

White swallow-wort is a perennial plant that needs at least 6 hours of full sunlight each day. It prefers partial to full sun, and partial shade can help to protect it from excessive heat during hot summers. This plant does best in well-draining soil with a neutral or slightly acidic pH level. It also prefers cooler climates with moderate to high humidity. When temperatures drop to 50 degrees Fahrenheit or below, the plant goes dormant and may appear to die. However, it will come back in spring and summer when the temperature rises.

White swallow-wort (Vincetoxicum hirundinaria) should be pruned heavily once a year to prevent it from becoming too woody and ungainly. Pruning can be done anytime between late spring and early summer while the plant is in full leaf and actively growing. Start by removing older stems and any shoots that have risen above the desired height, then prune back the remaining stems and branches to the desired size. Remove any dead, disease or weak areas of the plant. Pruning white swallow-wort in the correct way will lead to more abundant flowers and a more compact, attractive plant.