Species Seep Spring Arnica
yellow flowers with dark-yellow center, green leaves and yellow-green stems

Seep Spring Arnica

Arnica longifolia

Also Known As - Spearleaf Arnica,Long Leaf Arnica
Seep Spring Arnica (Arnica longifolia) is a native perennial herb which grows in a variety of habitats in western North America. It can be found in moist meadows, woodland openings, and along streambanks and roadsides. The plant has velvety light green stems and pointed, hairy leaves. Bright yellow flowers appear in the late spring to early summer and its strong scent often brings attention to the plant. Seep spring arnica grows easily and best in sunny areas and well-drained soils. It provides a good source of nectar for pollinators and is often used in native plant restoration projects.

Watering:

Minimal

Hardiness Zone:

Sun:

full sun,part shade

Leaf:

Yes

Leaf Color:

green

Growth Rate:

Low

Salt Tolerant:

Yes

Thorny:

Yes

Care Level:

Medium

watering

Lessing's Arnica should be watered once every 1-2 weeks throughout its growing season (spring through early summer). Make sure the soil is completely dry before you water, and when you do water, give it enough to soak the root system completely. Avoid watering during midday when temperatures may be hot, instead water early in the morning or late in the evening. During winter months, reduce watering frequency until the plant enters its dormant period. Over-watering can cause root rot, so consider using a moisture-meter to check the soil before deciding to water.

sunlight

Lessing's Arnica is a plant species that requires full sunlight in order to thrive. The plant should be kept in direct sunlight for a minimum of 6-8 hours each day. During the summer months, when the days are longer, Lessing's Arnica should be placed in full sun up to 10-12 hours each day. During the winter months when days are shorter, the plant should be kept in as much sunlight as possible, though no less than 6 to 8 hours. As with all plants, Lessing's Arnica should be rotated occasionally to promote even growth.

pruning

Lessing's Arnica is typically pruned in the spring and fall for the best results. Pruning in the spring can help to encourage healthy new growth and can also help to keep the plant looking attractive and neat. When pruning in the spring, trim off any dead or weakened stems, remove any overly crowded stems, and shape the plant as desired. In the fall, prune back the tops of the stems to prepare the plant for winter and encourage bushiness. However, be careful not to prune too much so that the plant is weakened. Also take care not to prune off any flower buds that may be forming.

Season

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

⚠️ Perenual and its members cannot be held liable for any health issues that may arise from the information provided on the website or from using any of the plants found on the site. The information provided is intended to be used as general guidelines only.