Starting Mimosa Trees from Seed: Complete Propagation Guide

Overview

The mimosa tree (Albizia julibrissin) is a deciduous tree reaching 35-40 feet. Also called silk tree. Native to China, hardy in USDA zones 6-10. Plume-shaped pink flowers appear in summer. Plant in warm, sunny locations with ample water.

Seed Preparation and Germination

Step 1: Scarify Seeds

Nick a small section on each seed using a nail file or scissors.

Step 2: Cold Stratification

Moisten paper towel, place seeds on one half, mist, fold over. Seal in plastic bag. Refrigerate 6-8 weeks. Check weekly; mist to maintain damp (not wet) conditions.

Step 3: Sow Stratified Seeds

Fill 3-inch pots with sterile seed-starting mix. Water thoroughly. Plant 2-3 seeds ¼ inch deep per pot. Cover with ¼ inch mix. Mist surface.

Step 4: Provide Germination Conditions

Place pots in watering tray in warm (65-75°F), bright area with 6-8 hours daily light. Keep moist but not soggy. Seedlings emerge in 3-4 weeks.

Step 5: Transplant Seedlings

When 3-4 inches tall, transplant to larger containers or garden.

Transplanting to Permanent Location

Step 1: Prepare Planting Hole

Dig hole twice the pot's diameter and depth.

Step 2: Remove from Container

Invert pot, insert finger in drain hole, gently slide off pot.

Step 3: Plant at Correct Depth

Loosen bound roots. Set tree so root crown matches soil level. Backfill halfway, water slowly to settle, complete backfill after drainage, tamp soil.

Step 4: Create Water Basin

Build 2-3 inch circular soil berm around tree to create slow-soak irrigation basin.