Species Culver's root

Culver's root

Veronicastrum sibiricum

Culver's root (Veronicastrum sibiricum) is an attractive perennial plant with tall, upright stems, reaching heights of up to 6 feet. It produces small white spires of flowers in July through September, which look quite striking against its bright green, lance-shaped foliage. This is a low-maintenance plant, that thrives when placed in sunny areas and well-draining soil. It makes an excellent addition to a cottage garden, where it can provide a striking contrast to other plants. Its attractive flowers are also attractive to butterflies and hummingbirds.

Cycle:

Herbaceous Perennial

Watering:

Average

Propagation:

Division,Root Cutting,Seed Propagation,Layering Propagation

Hardiness Zone:

3 - 8

Flowers:

Lavender-lilac Flowers

Sun:

Full sun

Leaf:

Yes

Leaf Color:

green

Growth Rate:

Low

Maintenance:

Low

Drought Tolerant:

Yes

Salt Tolerant:

Yes

Care Level:

Medium

watering

When watering Culver's root (Veronicastrum sibiricum), aim to provide at least 1-2 inches of water per week. Remember to water deeply to encourage the roots to grow deeper and become more drought tolerant. Water in the morning so the plant has the entire day to absorb the moisture. As the plant matures, reduce watering to every 7 to 10 days during the summer months. In the winter, reduce watering even further and only water when necessary.

sunlight

Culver's root (Veronicastrum sibiricum) prefers full sunlight and should receive 8-10 hours of direct sunlight every day. It grows best in slightly acidic soil with a pH between 5.5 and 7.0. It should be watered when the soil is dry to the touch, usually about once a week during the growing season. During periods of limited rainfall, it should be watered more often. It should not receive too much water as this may cause the plant to become waterlogged and could result in root rot.

pruning

Culver's root should be lightly pruned in late spring or early summer when new growth appears. The best practice is to remove dead or diseased branches, or those that are crossing or rubbing against other branches. If plants are in need of pruning to thin out, remove no more than 30-50% of the overall branches. Pruning should be kept to a minimum, as it reduces the showy flower clusters the plant produces.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

Veronicastrum sibiricum typically starts flowering in late spring or early summer, usually in May or June.

Starts Flowering

Veronicastrum sibiricum typically starts flowering in late spring or early summer, usually in May or June.

Hardiness Map