What Is an O-15 Mango?

O-15 is a rare selection from Gary Zill's Florida breeding program, grown from a Jakarta seedling and still known by its code rather than a name. It has firm, fiberless yellow flesh and a bold, resinous Indian/West Indian-style flavor that Tropical Acres Farms finds reminiscent of Jakarta but probably sweeter. We're still confirming its timing on our trees.

Where does O-15 come from?

O-15 comes from Gary Zill's program in Boynton Beach, Florida, and still goes by a code instead of a name. Incredible Edible Landscapes, a South Florida nursery, calls it “another yet-to-be-named mango from the Zill breeding program.” Tropical Acres Farms reports it's a seedling of Jakarta. We haven't found a published release date, so we don't give one.

What does O-15 taste like?

Tropical Acres Farms calls the flavor excellent, “though can be highly resinous, reminiscent of Jakarta but probably sweeter,” in the Indian/West Indian flavor class. Incredible Edible Landscapes describes a strongly aromatic, “piney” flavor with lots of resinous spice notes over a sweet mango core. It's a mango for adventurous eaters.

What does it look like?

Tropical Acres Farms describes a medium-sized, oval fruit that turns yellow and red at maturity, with yellow, firm, fiberless flesh.

When is O-15 in season?

Tropical Acres Farms says O-15 ripens over a very short span, only a couple of weeks, and picks it in May and June. Incredible Edible Landscapes reports a short season, usually only in June. Our Merritt Island season runs roughly May through September, and we're still confirming exactly when O-15 ripens on our trees. Because the window is short, we pick and ship it quickly. Fruit Cocktail is another Zill selection grown from a Jakarta seedling.

How to order

O-15 is a Rare & Collector variety: $197 for a Small Box (4–5 lb) or $247 for a Large Box (8–10 lb), with free USPS Priority shipping (2–3 days) to the lower 48 states except California. We can't ship to Alaska, Hawaii or U.S. territories. It's a pre-order for the 2027 season, and harvest timing on our trees is still being confirmed; we email you before your box ships. If the harvest comes up short, you can choose a substitute variety or store credit for the full amount (no cash refunds). Pre-order O-15 mangoes.

More grower's guides: What is a Fruit Cocktail mango? and What is a Giselle mango?