Richard in South Florida recently sent me a question asking if you can grow black sapote from seed and have it make good fruit.
“Can you get fruit from growing a seed from from the fruit of a Black Sapote. I’ve read that it is not true to seed. I bought a tree from someone here in South Florida in a 3 gallon pot. Tree looks great and the grower had many growing from seed. Can you elaborate a bit regarding this topic?”
Here’s a photo of Richard’s tree:
Your tree will almost certainly do fine and make good fruit – I’ve never heard of a “bad seedling” and many chocolate pudding fruit trees are propagated by seeds. They vary in size and number of seeds, but they’ll be good. Also, I have heard that young trees produce smaller fruit and they will get better and bigger as the tree matures. I’ve found this to be the case thus far with the black sapote I planted in my parents’ yard in Ft. Lauderdale.
It was bearing its first crop of a few fruit when I took this photo:
And here is one of the first fruits:
It’s small and wasn’t of the best flavor, but the tree was young and they do get better and better.
This makes sense as it takes a lot of energy for a tree to produce fruit. More leaves bring in more sunlight which produces more sugar for the fruits – and more roots bring up more water and more minerals which will enhance the size and flavor of your black sapotes.
Germinating Black Sapote Seeds
Like many tropical trees without real winter dormancy periods, black sapote seeds deteriorate in germination rates rapidly once mature. They need to be planted right away, if possible, for good success.
Again: The seeds need to be planted immediately as they don’t keep long, so
if you get some and want to start them, plant quickly. I’ve planted some seeds that were a few months old and they didn’t grow at all.
Like papaya, black sapote seeds need to get in the ground fast.
How Long Does it Take a Black Sapote Tree to Bear Fruit?
Everyone wants one of these as quickly as possible:
As Richard writes:
“How long can I expect for my (black sapote tree) to fruit? I worked hard on mending the soil prior to planting my trees. Lots of compost, earthworm castings, fish fertilizer, mycorizzae, and plenty of water and sun.”
According to the University of Florida:
“Black sapote may be propagated by seed, marcottage (air-layering, budding, and grafting. Black sapote varieties do not come true from seed and seedling trees may take up to 5 or 6 years to flower. Trees with only male flowers will not produce fruit; trees with female or male and female flowers will bear fruit. Superior fruit varieties and selections are therefore propagated by budding and grafting.”
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I hadn’t heard previously of there being some trees that are solely male; however, this is the case with their cousin the persimmon.
If you did have that kind of poor luck, then I would simply graft on some female scion wood.
The Rare Fruit Club of Australia covers the issue in short:
“Black sapote is usually andromonecious, ie it has both male and hermaphrodite flowers on the same tree. The axillary flowers are normally solitary if hermaphrodite and in clusters of 3-7 if male. They are white and tubular-lobed with a persistent 4-lobed green calyx and an ovary with 8-12 carpels. Self-incompatibility has been reported for some isolated trees; others may produce only male flowers. Pollination is by insects.”
Since many gardeners grow black sapote from seed and it’s the most common means of propgation, I can’t see that the “male only” thing is much of a problem.
So – how long?
According to an Australian government site:
“Seedling trees usually take 5 – 7 years to fruit.”
Another site in Australia claims:
“Trees begin to bear fruit in 3-5 years.”
This may refer to grafted specimens, however.
My black sapote tree fruited two years after planting and it had less care than you are giving yours. I started with a sad, marked-down, root-bound tree.
I pruned the roots when it was planted to undo some of the damage and it has rewarded us with good growth.
Getting a Black Sapote From Seed to Fruit Faster
The way to get fruit trees to grow fast is three-fold:
- Keep the grass away from the trunk. Mulch is better than bare soil.
- Water regularly and deeply
- Feed it regularly
Mulch really helped my fruit trees in North Florida to take off. I also tossed a lot of kitchen scraps, waste paper and rough compostable materials around the base of my seedling peach trees and they went nuts.
You can see me following this method in my film Compost Everything: The Movie.
Following that up with regular feeding and compost tea was a help. Urine is also very good. Regular water is a must for quick growth.
Black sapote trees are quite undemanding and are known for slow growth but you can definitely speed up their advance towards fruit-bearing. There’s no way a I wouldn’t grow a black sapote from seed if I have the chance… I’m always growing fruit trees from seed and had plenty of success, plus I’ve seen and documented many other success stories, such as Eddy’s avocado and these additional stories and photos here.
My bet is that you get chocolate pudding fruit in three years or less.
Keep us posted!