Reaching Maturity A fig tree is generally three to five years old before it produce a sizable crop. One exception to this rule is the “ISU Purple,” a fig comfortable between USDA zones 7 and 9, which can produce a small crop after one or two years.Click to see full answer. Similarly, you may ask, how long does it take for figs to ripen on the tree?A common question that gardeners with fig trees have is, “How long does it take a fig to ripen on the tree?” The answer to this question is not straightforward. Under ideal conditions, figs can ripen in as little as two months, but most figs do not grow in ideal conditions.One may also ask, do figs grow before the leaves? A fig tree develops a ground-based root system when planted in the beginning of the dormant season, winter, and before its leaves appear in spring. The roots can grow deep and strong, but cold snaps can damage a young plant. Then, why is my fig tree not growing? Fig Tree Will Not Fruit Because of Watering Conditions If a fig tree is suffering from water stress caused by either too little or too much water, this can cause it to stop producing figs or never start producing, especially if it is a younger tree. Don’t let fig trees grow in standing water.What to do with unripe figs on tree? Instructions Wash the figs and clean their stems. Fill a large pot with water and boil the figs for about 10 minutes. Let it cool. When they are cool enough to touch, squeeze the figs gently to remove the bad taste. Repeat the same step. Boil 5 ½ water and sugar together in a different pot. Add the squeezed figs in it.