Mimosa should be watered thoroughly but infrequently. Water when the soil is dry to a depth of 1 inch and provide enough water to moisten the soil to a depth of at least 8 inches. Avoid overwatering as this can waterlog the soil and drown the roots. A general rule of thumb is to provide around 1-2 inches of water per week. In hotter, drier climates plants may need more frequent watering than those in cooler climates.

Mimosa plants thrive in direct sunlight for a minimum of 6 to 8 hours a day to ensure they stay healthy and produce flowers. Ideally, this species should receive sun in the early morning or late afternoon as the direct sunlight during mid-day could scorch the leaves. During the summer months, Mimosa should receive full sun each day.

Mimosa (Albizia julibrissin) should be pruned in early spring, before new growth appears. The amount of pruning varies based on the age and size of the plant, but generally about 1/3 to 1/2 of the older stems can be safely removed without harming the plant. If it’s an older plant, more aggressive pruning may be required but should only be done with the advice of a horticultural expert. Other thinning maintenance pruning can be done throughout the year to help maintain the shape and size of the plant.

Nitrogen-fixing mimosa with pink summer flowers.

Zijdeboom (Albizia)