Most mango varieties are ready to harvest 100 to 150 days after flowering, depending on the cultivar and climate. But counting days alone won’t tell you the full story. The most reliable way to know when a mango is ready is to read the fruit itself: its shape, skin, color, and feel all change in predictable ways as it matures.
General Timeline From Flowering to Harvest
Mango trees flower in late winter or early spring in most growing regions, and the fruit matures roughly 3 to 5 months later. That puts harvest season somewhere between late spring and early fall, depending on where you live and what variety you’re growing. Early-season varieties like Alphonso and Nam Doc Mai tend to fall on the shorter end of that range, while late-season cultivars like Keitt can push past 150 days. Local weather plays a role too. Hot, dry conditions can speed maturity, while cool or overcast stretches slow it down.
How the Fruit Looks When It’s Ready
Shape is one of the most reliable indicators. An immature mango hangs with a flat, narrow profile and slightly concave cheeks. As it matures, the cheeks fill out and become plump and rounded. The “shoulders” near the stem attachment point broaden and flatten, and the nose at the bottom of the fruit rounds out instead of tapering to a point. When the fruit looks full and almost swollen compared to its earlier form, it’s approaching harvest maturity.
Skin texture changes too. The tiny pores on the mango’s surface, called lenticels, grow larger as the fruit develops and reach their maximum size at full maturity. On some varieties, the skin shifts from a matte, slightly rough texture to a smoother, sometimes waxy feel. You may also notice a subtle shift in the base color of the skin, from a deep, bright green to a lighter, slightly yellowish green.
Why Color Alone Can Be Misleading
Many people wait for their mangoes to turn yellow or red on the tree, but this is a trap with certain varieties. Keitt, Dasheri, Langra, and several other cultivars stay green even when fully ripe. Keitt mangoes, for example, retain their green peel through the entire ripening process. If you’re growing one of these varieties and waiting for a color change, you’ll end up with overripe fruit that drops from the tree before you pick it.
For varieties that do change color, like Tommy Atkins or Haden, a red or orange blush on the sun-exposed side can develop well before the fruit is actually mature. The blush is a response to sunlight, not a sign of ripeness. Instead of relying on color, focus on the background color of the skin (the color in the shaded areas), the shape changes described above, and the feel of the fruit.
The Stem Snap and Sap Test
When a mango is mature, the stem starts to separate more easily from the branch. You shouldn’t need to wrestle the fruit free. If you tilt a mature mango to the side and the stem snaps cleanly, that’s a strong sign it’s ready. Some growers also look at the sap. When you cut the stem of an immature mango, the sap squirts out under pressure because the fruit is still actively drawing water and nutrients. On a mature fruit, the sap flows more slowly and with less force.
Sap contact is worth taking seriously. Mango sap is highly acidic and contains an oily compound that causes dark brown or black streaks on the skin, a condition called sapburn. It enters the fruit through the same surface pores that expand during maturation, so a ripe mango with large, open lenticels is especially vulnerable. The sap can also cause allergic skin reactions in people, similar to poison ivy. To minimize damage, harvest with 5 to 8 centimeters (about 2 to 3 inches) of stem attached, and let the fruit hang stem-side down for a few minutes after cutting so the sap drains away from the skin.
Using a Refractometer for Precision
If you want an objective measurement, a refractometer reads the sugar content of the fruit’s juice on a Brix scale. To test, cut the mango into three sections and squeeze juice from the middle portion onto the refractometer’s glass plate. A Brix reading above 9 degrees generally indicates the fruit has reached maturity. Higher numbers mean more sweetness. This method is especially useful if you’re growing mangoes for sale, since buyers for fresh markets, juice production, and dried fruit all have different sugar level preferences.
For home growers, a refractometer is a modest investment (typically $20 to $40) and removes much of the guesswork, particularly in your first few seasons before you’ve learned to read the visual cues of your specific variety.
Harvesting at Mature Green vs. Tree Ripe
Mangoes are climacteric fruit, meaning they continue to ripen after being picked. Most commercial mangoes are harvested at the “mature green” stage, when the fruit has reached full size and internal sugar levels but the flesh is still firm. This gives time for shipping and handling without bruising. The fruit ripens fully off the tree over the following 5 to 10 days at room temperature.
If you’re picking from your own tree and eating at home, you can let the fruit go a step further. Wait until the background skin color has started to shift, the fruit gives slightly under gentle thumb pressure, and you can smell a fruity, sweet aroma near the stem end. This gets you closer to peak flavor without the fruit becoming so soft that it bruises during picking.
Ripening Mangoes After Harvest
For mature green mangoes, the ideal ripening temperature is between 18 and 22°C (roughly 64 to 72°F). Temperatures above this range can cause uneven ripening, off-flavors, or skin discoloration. Below 13°C (55°F), the ripening process stalls and the fruit may develop chilling injury, leaving it rubbery or flavorless.
Placing mangoes in a paper bag with a banana or apple speeds things up because those fruits release ethylene, the natural gas that triggers ripening. Commercial operations use controlled ethylene exposure at 10 to 100 parts per million over 2 to 3 days to ripen fruit uniformly. At home, the paper bag method achieves a similar effect on a smaller scale. Check the fruit daily. Once it yields to gentle pressure and smells fragrant at the stem end, it’s ready to eat. At that point, move it to the refrigerator to slow further ripening, where it will keep for another 3 to 5 days.