Mimosa Silk Tree Seeds

Albizia Julibrissin seeds have a thick, hard coat, so they require a scarification step to germinate. Nick the coat with sandpaper or a blade, soak in warm water for 24 hours, then sow Mimosa Tree seeds about 1/8 inch deep, spaced 1-2 inches apart. Keep the medium moist, keep it warm, and sprouts usually show up in two to four weeks. Sow Mimosa Silk Tree seeds in spring, after the last hard frost, for the most reliable results.

Mimosa Tree seeds for planting need full sun, because otherwise you end up with leggy plants and thin bloom. Mimosa is not picky about the soil and tolerates dry and compacted ground provided it drains well. Wet feet is basically the one thing that kills a young Albizia Julibrissin tree outright. Water consistently while seedlings establish; once the tree's a couple years in, you can back way off since drought tolerance kicks in fast. Give mature trees room — 12 to 20 feet between plantings.

Cold hardy to -13°F, which handles most winters across its zones without extra fuss. Blooms run late spring into mid-summer, then long seed pods follow if you want to save your own Silk Tree Mimosa seeds for next season. Prune lightly in late winter, because heavy cuts during the growing season will cost you bloom the following year. Young trees in the colder end of zone 6 can get some dieback, so mulch the root zone the first couple winters just to be safe.