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Albizia julibrissin
Persian silk tree
Albizia julibrissin
Albizia julibrissin, commonly known as the Mimosa tree or Silk tree, is a deciduous tree native to Asia. It's prized for its feathery, fern-like leaves and fragrant, pink, powderpuff-like flowers that bloom in summer. The tree has a broad, umbrella-shaped crown and can grow up to 20-40 feet tall. While beautiful, it can be considered invasive in some areas.
CategoryDetails
Plant TypePerennial plant
Estimated Plant Lifespan20 years lifespan
Sun Requirements6+ hours direct sunlight (Full Sun)
Pollination

Method: Animal

Notes: Pollinated by insects, especially bees and butterflies, attracted to the flowers' nectar.

Watering Requirements

Method: Deep watering

Frequency: Water deeply, especially during dry periods.

Notes: Avoid overwatering, as Mimosa trees prefer well-drained soil.

Humidity Requirements

Level: Moderate

Maintenance: Mimosa trees tolerate average humidity levels; no special measures needed indoors.

Care InstructionsPrune dead or crossing branches in late winter or early spring. Be mindful of potential webworm infestations, and address them promptly. Water deeply during dry periods.
Temperature Range

Min: -18°C

Max: 38°C

Alternative Namesmimosa, pink silk tree, Silktree, Ružičasto svileno drvo, silky acacia, Albizzia julibrissin, Acacia julibrissin

Cultivars

Allium schoenoprasum
Chives
Allium schoenoprasum
Chives help to repel some insect pests, potentially protecting the Mimosa.
Acer negundo
box elder
Acer negundo

Boxelder trees have similar growth habits and can outcompete the Mimosa for sunlight and resources.

Juglans nigra
eastern black walnut
Juglans nigra

Black Walnut produces juglone, a chemical that can inhibit the growth of other plants.

Webworms

Webworms create silken webs that engulf branches and foliage. Infestations can cause defoliation and weaken the tree.

Mimosa webworm

The Mimosa webworm is a common pest. Caterpillars feed on the leaves, causing webbing and defoliation. Symptoms are webbing and chewed leaves.

Spider mites

Spider mites feed on the sap of leaves, causing stippling, yellowing, and eventually leaf drop. Symptoms include stippling and yellowing on leaves.

Steps:

    • Collect seeds from mature seed pods in the fall.
    • Soak seeds in warm water for 24 hours to improve germination.
    • Sow seeds in well-draining soil, about 1/2 inch deep.
    • Keep soil moist but not waterlogged.
    • Seedlings can be transplanted once they are established.
    • Take softwood cuttings in spring or summer.
    • Dip cuttings in rooting hormone before planting in a well-draining mix.
    • Keep cuttings moist and in a warm location until roots develop.

Neem Oil

Controls various insect pests, including webworms and spider mites.

Insecticidal Soap

Effective against spider mites and other soft-bodied insects.

Compost

Improves soil fertility and provides nutrients.