How do you know when a soursop is ready? It's the question I hear most from people with a guanábana tree in the yard, and for good reason. Pick too early and the fruit never sweetens. Wait too long and it hits the ground and splits open, and the iguanas throw a party.
So let's talk about the part of growing soursop (Annona muricata) that people actually care about: getting the fruit off the tree at the right moment and turning it into something delicious.
Reading a soursop on the tree
Soursop doesn't send one obvious signal like a mango blushing red. You're looking for a combination of small changes:
- Color shifts. An immature fruit is a deep, glossy green. As it matures, the skin turns a lighter, duller green, sometimes with a faint yellowish cast.
- The spines relax. On a young fruit the soft spines are close together and stiff. On a mature one they spread apart and feel softer and more flexible; some may darken or break off easily.
- A slight give. Press gently with your thumb. A mature fruit yields just a little. It shouldn't feel mushy.
- Size and shape. It has stopped visibly growing and filled out. A lopsided fruit can still be good; it usually just means some sections weren't pollinated.
When you see those signs, pick it. Don't wait for it to soften on the tree.
How to pick it
Soursops are heavy and bruise easily, so treat them gently. Cut the stem with pruners rather than twisting, and support the fruit with your other hand so it doesn't drop. If the fruit is high up, a pole picker with a basket is worth having. A soursop that falls onto hard ground often cracks and won't keep.
Ripening on the counter
Here's the good news: soursop ripens off the tree. Leave it at room temperature, out of direct sun. Over the next few days it will go from firm to soft, and the skin may darken in spots. It's ready when it gives easily under gentle pressure, like a ripe avocado or a bit softer.
Once ripe, the clock is ticking. A ripe soursop goes from perfect to overripe fast, so have a plan for it. If you can't use it right away, pull out the pulp and refrigerate or freeze it.
Opening it up
- Wash the fruit and place it on a cutting board or in a large bowl. It's juicy.
- Pull it apart with your hands or slice it in half lengthwise.
- Scoop or pull out the white pulp, leaving the skin and the fibrous core.
- Remove every seed. They're black and glossy and easy to spot. Don't eat, blend or crush them. Like the seeds of other annonas, they contain compounds you don't want to consume.
The pulp is creamy, a little fibrous, and tastes like a mix of pineapple, strawberry and citrus with a creamy, tropical backbone. Sweet with a tangy edge, which is where the "sour" in the name comes from.
What to make with soursop
Champola or batido
In Miami's Cuban kitchens, the classic is a soursop milkshake. Blend seeded pulp with cold milk, a little sugar and ice. Strain it if you like it silky. Some families add a squeeze of lime. That's it, and it's the best way to convert a soursop skeptic.
Agua or juice
Blend pulp with cold water and a touch of sugar or lime, then strain. It's lighter and very refreshing after an afternoon of yard work.
Sorbet or ice pops
Soursop's creamy texture makes great frozen treats. Blend pulp with a simple syrup and lime juice, then churn or pour into ice pop molds.
Just eat it
Chilled, with a spoon, spitting out the seeds. Hard to beat.
You'll find a lot of big health claims about soursop online. I'm a fruit grower, not a doctor, so I'll leave those alone. I grow guanábana because it tastes amazing and Miami is one of the few places in the country where you can grow it outdoors.
Why some soursops come out small or misshapen
If your tree drops fruit early or makes knobby, lopsided fruit, the usual culprit is pollination. Like sugar apple, soursop flowers move through a female stage and then a male stage, which makes self-pollination hit or miss. Hand-pollinating with a small paintbrush can help: collect pollen from older, fully opened flowers in the afternoon and dab it into freshly opening flowers the next morning.
Other common reasons for poor fruit:
- Cold. Soursop is one of the most cold-sensitive fruit trees we grow. Even a cool snap can set it back, so protect young trees on chilly nights. See Cold-Hardy Fruit Trees for Florida Freezes for how to cover tender trees.
- Drought during fruit set. Keep watering steady during dry spells.
- Seed borers. Tiny wasps can damage developing seeds and leave small holes in the fruit. Bagging young fruit helps.
Planning to add a soursop (or its sweeter cousin, sugar apple) to your yard? Timing matters for tender tropicals; here's my take on when to plant fruit trees in Miami.
FAQ
Can I pick soursop green?
Only once it's mature: lighter green, spines spread, slight give. A truly immature fruit won't ripen properly.
How long does a picked soursop take to ripen?
Usually a few days at room temperature, depending on how mature it was when picked.
Can I freeze soursop?
Yes. Freeze the seeded pulp in bags or containers. It's perfect for batidos later.
When is soursop season in Miami?
Trees can flower and fruit over a long stretch of the year, often with a heavier crop in the warmer months.
Grow your own guanábana
There's nothing like a batido made from your own tree. We grow soursop ourselves here in Miami; get a Soursop (Guanábana) plant from Giardino Fresco and start your own harvest.
