Rhododendron tomentosum — an easy houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Rhododendron tomentosum

Rhododendron Tomentosum

Updated · 522 observations
ON THIS PLANT

Rhododendron tomentosum (syn. Ledum palustre), commonly known as marsh Labrador tea, northern Labrador tea or wild rosemary, is a flowering plant in the subsection Ledum of the large genus Rhododendron in the family Ericaceae.

A note from PlantMom

Wild rosemary is resistant to disease and typically not susceptible to illnesses. As for upkeep, this plant is fairly low-maintenance. Planted outside, it needs only light watering, and larger specimens usually do not need pruning. Smaller plants, however, should be pruned after they finish blooming. Wild rosemary is appropriate for anyone who has an outdoor area, like a garden or deck, and it does not demand much care experience.

— PlantMom
CARE GUIDE

How to keep Rhododendron Tomentosum.

Light

Wild rosemary thrives when it receives abundant warm sunlight for most of the day. It can tolerate partial shade, but that may weaken its health and hinder its development. This preference reflects the sunny conditions of its native habitat. Excessive sun exposure can cause leaf scorch, while insufficient light often produces weak, leggy growth.

Water

Wild rosemary naturally grows in peat bogs and pine forests, where it thrives in high humidity and damp conditions. While it can withstand short periods of dryness, it generally needs to be watered every three weeks. This plant prefers cooler climates and requires soil that is both moist and well-drained for optimal growth.

Temperature

Wild rosemary is highly adaptable to a wide range of climates, from blazing summers to frigid winters. Still, it prefers a specific temperature range for growth. If temperatures rise too much, the plant can experience heat and humidity stress that may kill it. In areas where temperatures approach the lower limit of its cold tolerance, providing insulation to protect the plant is important.

Fertilizer

Proper timing is important for fertilizing Wild rosemary. Apply fertilizer in early spring and continue monthly until early summer. Fertilizer encourages attractive blooms and supplies energy during both dormant and active growth periods.

Pruning

Wild rosemary, known for its fragrant leaves and white flowers, benefits greatly from pruning in early spring. To maintain its health and stimulate growth, focus on three key techniques: removing dead branches, encouraging new growth, and ensuring proper airflow. Use clean tools, trim lightly, and be mindful of the plant's natural growth pattern. Doing so will improve its health and reduce the risk of pests.

CHARACTERISTICS

Botanical profile.

Plant Type
Vine, Shrub
Life Cycle
Perennial
Genus
Rhododendron
Family
Ericaceae
Hardiness Zone
2-7
Mature Height
30 cm to 91 cm
Mature Spread
49 cm to 91 cm
Leaf Color
Dark Green
Leaf Type
Evergreen
Flower Color
White, Pink
Flower Size
3.05 cm to 5.08 cm
Bloom Time
Mid spring, Late spring
Planting Time
Spring, Summer, Autumn
Harvest Time
Mid summer, Late summer, Early fall
ALSO KNOWN AS

Other names.

en Marsh-tea en Crystal-tea en Wild rosemary en Marsh Labrador Tea en Northern Labrador tea en Dwarf Labrador tea en Narrow-leaved Labrador tea en Dutch myrtle en Labrador tea en Ledum
PLATES
Rhododendron tomentosum other
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Rhododendron tomentosum other
PLATE 02 · other
ALSO IN THE LIBRARY

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