Hypericum densiflorum — an easy houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Hypericum densiflorum

Hypericum Densiflorum

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ON THIS PLANT

Hypericum densiflorum, also known as bushy St. John's wort or dense St. John's wort, is a perennial herb in the flowering plant family Hypericaceae native to North America. The specific epithet densiflorum is Latin, meaning "densely flowered", referring to the many-flowered cymes.

A note from PlantMom

Bushy St. John's wort has strong resistance to disease and is generally unlikely to develop illnesses. Regarding care, this plant is relatively low maintenance. When grown outdoors it needs little watering, and larger plants typically do not need pruning, though smaller plants should be pruned after they finish blooming. Bushy St. John's wort is appropriate for anyone with outdoor space, such as a garden or a deck, and does not demand much gardening experience.

— PlantMom
CARE GUIDE

How to keep Hypericum Densiflorum.

Light

Bushy St. John's wort is native to open habitats, such as sunny meadows and the edges of forests, which offer plentiful light. It prefers Full Sun but will also tolerate Partial Sun, adapting well to various light levels.

Water

Bushy St. John's Wort thrives in well-drained soil with moderate moisture. It is drought-tolerant and typically requires watering only every three weeks. Ideally suited for temperate climates, this plant does best outdoors in areas where the rainfall aligns with its low water needs, closely resembling its native habitat.

Temperature

Bushy St. John's wort is very adaptable to a range of climates, from blistering summers to freezing winters. Nevertheless, it has an ideal temperature range for growth. When temperatures get too high, the plant is susceptible to heat and humidity stress, which can kill it. In locations where temperatures approach the lower limit of its cold tolerance, it is important to provide insulation to protect the plant.

Fertilizer

The timing of fertilizing Bushy St. John's wort is important. Apply fertilizer in early spring and continue monthly until early summer. Fertilizer encourages attractive blooms and supplies energy during both dormant periods and active growth.

Pruning

To encourage healthy growth, it's best to prune bushy St. John's wort in the spring. Cut back last year's growth by one-third, and remove any damaged stems. By thinning out crowded branches, you can improve air circulation, which reduces the risk of disease. Regular pruning not only increases flowering but also enhances the plant's vitality. For the best results, complete the pruning before new growth begins.

CHARACTERISTICS

Botanical profile.

Plant Type
Shrub
Life Cycle
Perennial
Genus
Hypericum
Family
Hypericaceae
Hardiness Zone
5-9
Mature Height
0.61 m to 2.13 m
Mature Spread
0.91 m to 1.83 m
Leaf Color
Green
Leaf Type
Deciduous
Flower Color
Yellow
Flower Size
2.54 cm
Bloom Time
Summer
Planting Time
Spring, Summer, Autumn
Harvest Time
Fall
ALSO KNOWN AS

Other names.

en Bushy St John's-wort en Bushy St. Johnswort
PLATES
Hypericum densiflorum leaf
PLATE 01 · leaf
Hypericum densiflorum flower
PLATE 02 · flower
Hypericum densiflorum flower
PLATE 03 · flower
ALSO IN THE LIBRARY

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