Culvers Root

Where to Plant

• Sunlight: Choose a spot that receives at least 6 hours of direct sunlight to ensure the tall flower spikes remain strong and upright. While it tolerates partial shade, the stems may lean or require staking if they do not get enough light.
• Soil: This plant prefers moist, rich, and loamy soil that mimics a meadow environment. If you have heavy clay, mix in plenty of organic compost to help the soil hold moisture without becoming stagnant or compacted.

Watering Requirements

During the first year, keep the soil consistently moist to help the deep root system establish itself. Mature plants can handle brief dry periods, but they prefer regular deep soakings that reach the root zone. If the plant dries out too much, you will see the lower leaves turn yellow and drop as a sign of stress.

Pruning Tips

Culver's Root blooms on new wood, so the best time to prune is in late winter or early spring before new growth starts. Think of this like a fresh start for the season by cutting the old stems down to about 2 inches above the ground. You can also deadhead the central flower spike after it fades to encourage the smaller side branches to produce a second flush of blooms.

Fertilizer Needs

Apply a balanced, slow release fertilizer or a thick layer of finished compost in early spring as the first shoots appear. Avoid using high nitrogen fertilizers in mid to late summer because they promote weak and spindly growth. This rapid growth makes the tall stems more likely to flop over during heavy summer rains or wind.