Purple Giant Hyssop

Small-Flowered Agalinis prefers moist, well-drained soils and will grow in both full sun and partial shade. It should be watered deeply once a week, allowing the soil to dry out slightly between waterings. Avoid over-watering, as this can cause root rot. During periods of extreme heat and dryness, it may be necessary to water more frequently.

Small-Flowered Agalinis (Agalinis purpurea var. parviflora) is an early summer-flowering plant that prefers full sun and does best in locations which get plenty of sunlight throughout the day. For best flowering results this plant should receive at least 6 to 8 hours of direct sunlight each day with afternoon sun being particularly beneficial. The midday sun hours (between 11am and 3pm) will be the most important for this species to receive maximum flowering. If the plant is grown in a shady area, it is likely that flowering will be very minimal. During the hottest parts of the day, it is beneficial to provide some indirect light for the Agalinis to prevent wilting.

Small-Flowered Agalinis should be pruned in early spring, before the new growth starts. Cut off any dead, weak or damaged stems at the base. Prune back a third of the stems to encourage better growth and flowering. This will promote a bushy, healthy plant, and a better display of flowers. Prune lightly if desired to maintain desired shape and size. Avoid over-pruning as this can lead to reduced flowering and fewer blooms.