Trelease's larkspur
Delphinium treleasei
Overview
Trelease's larkspur (Delphinium treleasei) is an incredible species of wildflower that displays a remarkable beauty. With spectacular tall spikes of showy, bright blue blooms, these flowers can light up any garden! The white and yellow center of each bloom adds an interesting contrast and provides a wonderful pop of extra color. The narrow, grass like leaves are amazing too, providing a pleasant green backdrop year-round and adding texture to the garden. Additionally, this species is easy to grow and requires very little maintenance to ensure beautiful blooms every year.
Care Guide
Watering
Trelease's larkspur (Delphinium treleasei) prefers moisture rich soil, making it an excellent candidate for places with plenty of rain or regular watering. It thrives in summer, with regular and consistent watering throughout its growing season. Water the plant deeply once every week, allowing the soil to dry out slightly between waterings. During prolonged periods of drought or heat, water more frequently, but avoid excessive watering that can lead to root rot. To ensure deep, thorough watering, use a drip irrigation system or soaker hose.
Light
Trelease's larkspur is a sun loving plant species that grows best when provided with full sun. In order to thrive, it requires at least 6-8 hours of direct sunlight each day. During the peak of the summer, 8-10 hours of sunlight may be needed for optimal growth. It is important to avoid high midday temperatures, as far as possible, since Trelease's larkspur is prone to heat and drought stress. The amount of sunlight should also be slightly reduced as the plant grows larger, to prevent wilting or other stress related issues.
Temperature
Hardiness zone 5-7.
Pruning
Pruning for Trelease's larkspur (Delphinium treleasei) should take place in late winter or early spring, as new growth begins to appear. Prune back the stems of the plant by 1-third to 1-half of their length. This will encourage new growth and maintain a healthy, attractive shape of the plant. Keep in mind that when pruning, make sure that enough of the plant’s leaves are left on the stem so that the plant can still photosynthesize. Once pruned, the plant can be fertilized and watered to encourage new growth.
Propagation
Seed Propagation, Division, Cutting
Uses & Symbolism
Attracts: Butterflies.
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