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Description
Hypericum Mutilum, commonly known as Dwarf St. John’s Wort, is a perennial herbaceous plant belonging to the Hypericaceae family. It is native to the eastern and central parts of North America, ranging from Ontario to Florida and as far west as Texas. This plant typically grows up to 24 inches tall and spreads up to 12 inches wide. The plant blooms from June to August, producing small, bright yellow flowers with five petals that are about half an inch in diameter.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Malpighiales |
| Family | Hypericaceae |
| Genus | Hypericum |
Appearance
Hypericum Mutilum has narrow, elliptical leaves that are about an inch long and half an inch wide. The leaves are opposite, meaning they grow in pairs on the stem. The plant has a woody stem that is green when young and turns brown as it ages. As the plant matures, it develops a bushy appearance due to its many branches. The flowers grow in clusters at the tips of the stems and have a distinctive yellow color. The flowers are followed by small capsules that contain numerous seeds.
Care Guide
Water
Hypericum Mutilum prefers moist soil, but it is important not to overwater the plant as it can lead to root rot. Water the plant once a week or when the top inch of soil feels dry to the touch.
Fertilization
Fertilize the plant with a balanced fertilizer in the spring and summer months. Avoid fertilizing in the fall and winter as the plant goes dormant during this time.
Soil
Hypericum Mutilum prefers well-draining soil that is rich in organic matter. The soil should be kept moist but not waterlogged.
Sunlight
Hypericum Mutilum prefers full sun to partial shade. It can tolerate some shade, but too much shade can affect its growth and flowering.
Hardiness Zones
Hypericum Mutilum is hardy in USDA zones 5 to 9.
Common Pests & Diseases
Hypericum Mutilum is relatively pest and disease resistant. However, it can be affected by spider mites, aphids, and scale insects. These pests can be controlled with insecticidal soap or neem oil. The plant can also be affected by powdery mildew, which can be prevented by ensuring good air circulation around the plant and avoiding overhead watering.
Habitat
Hypericum Mutilum grows in a variety of habitats, including dry woods, rocky slopes, and open fields. It prefers well-draining soil and can tolerate a range of soil types, including sand and clay. The plant is typically found in areas with full sun to partial shade.
Question and Answer
Q: Is Hypericum Mutilum poisonous?
A: No, Hypericum Mutilum is not poisonous to humans or animals.
Q: Can Hypericum Mutilum be grown in containers?
A: Yes, Hypericum Mutilum can be grown in containers as long as the container is large enough to accommodate the plant’s root system.
Q: When should Hypericum Mutilum be pruned?
A: Hypericum Mutilum can be pruned in the spring or fall to maintain its shape and size. It is important to avoid pruning too much as this can affect the plant’s growth and flowering.
Q: Can Hypericum Mutilum be propagated from cuttings?
A: Yes, Hypericum Mutilum can be propagated from stem cuttings taken in the spring or early summer. The cuttings should be planted in well-draining soil and kept moist until they root.
Related Plants
Other species of Hypericum include:
- Hypericum perforatum (Common St. John’s Wort)
- Hypericum calycinum (Rose of Sharon)
- Hypericum frondosum (Golden St. John’s Wort)
References
- “Hypericum Mutilum L.” USDA Plants Database.
- “Hypericum Mutilum.” Missouri Botanical Garden.
- “Hypericum Mutilum.” North Carolina Extension Gardener Plant Toolbox.
