Sow a plump mangosteen seed as soon as you take it from the fruit. Keep it moist and shaded. A dried grocery seed is often dead, and a cutting rarely roots.
Sow a plump seed as soon as you take it from the fruit
| Factor | Recommended | Avoid |
|---|---|---|
| Seed | A plump, fully developed seed, sown the day it leaves the fruit | Do not sow a shriveled seed that sat dry for a week |
| Start | Soak 24 hours, then sow in a deep pot of moist peat and sand | Do not start it in a shallow cell that bends the taproot |
| Wait | Sprout in about 20 to 43 days; two years to about 12 inches | Do not transplant after the seedling is 2 feet tall |
| Light | Bright shade and even moisture in a deep nursery bed | Do not dry the mix, and do not stand the pot in hot sun |
The so-called seed is an adventitious embryo, not a fertilized seed, so seedlings are fairly uniform. A plump seed loses viability within five days out of the fruit, though a seed left inside the fruit can wait three to five weeks. [1] mangosteen often grows poorly in Florida soil even when nights stay warm, which is why the nursery mix matters as much as the seed. [2] This is a slow tree, not a first-year fruit from a windowsill cutting. [3]
When do I sow mangosteen seed?
The day you take a plump seed from the fruit. Soak it 24 hours, then sow it in a deep pot.
How to grow mangosteen from seed
- Open a ripe fruit and choose only plump, fully developed seeds. Discard thin or shriveled ones.
- Soak them in water for 24 hours.
- Sow at once in a deep pot or a nursery bed at least 3 feet deep, in moist peat mixed with coarse sand. Set the seed on its side and barely cover it.
- Keep the mix evenly moist in bright shade. Sprouting starts in about three weeks and should finish by six weeks.
- Leave the seedling in that deep pot until it is about 12 inches tall, usually two years or more.
- When you move it, lift a deep ball. Do not break the taproot. Then plant it on Planting Mangosteen.
How long until a seedling is big enough to plant out?
Plan on two years, when the plant is about 12 inches tall. Do not wait until it is 2 feet, because the taproot is then too long to move safely.
What fails if you wait, or if you try a cutting
A seed that dries for five days on the counter often never sprouts. Cuttings and air-layers usually fail to root, or they make a short-lived, lopsided plant. Grafting onto other Garcinia species is a nursery method, and even then many unions fail later. The Florida curiosity is to approach-graft a weak mangosteen onto Garcinia tinctoria in the same pot so the top has two root systems; that is not the home cutting on a windowsill. Even a well-grown seedling may take many years to fruit. [4]
Will a cutting grow?
Usually not. Cuttings and air-layers rarely root. Sow a plump seed the day you open the fruit, or buy a nursery seedling.
Sow the same day, keep the mix moist, and wait two years before you move a 12-inch seedling.
FAQ
Can I start from a dried grocery seed?
Usually no. A seed that has dried for five days is often dead. Use a plump seed from a fresh fruit, or buy a two-year nursery seedling.
Related guides
Recommended plants
References
- [1] Purdue University (Julia F. Morton) -
https://web.archive.org/web/20140619231008/http://www.hort.purdue.edu/newcrop/morton/mangosteen.html - [2] Florida State Horticultural Society -
https://journals.flvc.org/fshs/article/download/100453/96408/0 - [3] UF/IFAS Extension Lee County -
https://blogs.ifas.ufl.edu/leeco/2026/07/31/the-lustful-epicureans-garcinia/ - [4] WLRN Public Media -
https://www.wlrn.org/food-and-agriculture/2025-05-01/rare-fruits-mangosteen-florida-broward-backyard-gardens
This note is part of Garcinia Guides.
More notes on making another plant live in Propagating Guides.
Updated: Reviewed by Bosquelle Editors