Fig fertiliser: fig tree fertilizer kits for containers & in-ground trees

Grow thriving fig trees with the right fig fertiliser

Fig trees are resilient, rewarding, and surprisingly adaptable, but to keep them fruiting year after year, nutrition matters. Whether you're growing a compact fig on your patio or managing a larger container-grown variety, GrowScripts makes it simple to feed your tree what it needs to thrive. This collection delivers balanced fig fertiliser for vigorous roots, lush foliage, and sweeter, more abundant fruit, without the guesswork, tuned specifically to the fig's own feeding habits and seasonal cycles rather than treated like any other fruit tree.

Why choose GrowScripts fig fertiliser

Figs need consistent yet gentle feeding, with a balance of nitrogen, potassium, and calcium to support fruiting and prevent nutrient stress. Container figs have limited root zones, so they depend on you for nutrients far more than an in-ground tree does, which is why our fertilizer provides controlled, even feeding that won't burn or overload sensitive roots. Every nutrient in these kits is pre-measured and ready to apply, with no messy mixing or complicated ratios, and each formula is based on tested ratios for container-grown figs rather than a generic fruit tree blend relabeled for figs.

What do the numbers on fig fertiliser mean?

The three numbers on any fertilizer label are nitrogen, phosphorus, and potassium, listed in that order. Nitrogen drives leafy green growth, phosphorus supports root and flower development, and potassium supports overall plant health and fruit quality. Fig trees do best with a formula that doesn't lean too heavily on nitrogen alone, since excess nitrogen pushes leafy growth at the expense of fruit. Figs also do well in slightly acidic soil, so a fertiliser that doesn't push the soil too far toward alkaline over repeated applications tends to perform better long-term.

When to feed your fig tree

Timing matters as much as the fertiliser itself. Begin feeding as new growth starts in spring, right as the growing season gets underway, so nutrients are available when the tree needs them most. Container figs typically need feeding through the full growing season, tapering off as temperatures drop in fall, while in-ground trees can often go longer between applications thanks to their larger root systems.

What's inside the fig fertiliser collection

Complete fertilizer kit. A balanced nutrient trio: slow-release NPK, micronutrients, and a calcium-rich supplement for steady, all-season feeding.

Micronutrient support. Figs can show yellowing or leaf drop when trace elements run low. Our micronutrient blend includes iron, zinc, and magnesium to keep foliage green and productive.

Root-ready nutrition. Optimized for how fig roots actually take up nutrients, supporting strong establishment in containers without overwhelming a smaller root system.

Slow-release fertilizer. A good fit for growers who prefer fewer feedings while still maintaining consistent nutrition and fruit set through the season.

How to use fig fertiliser

Spread the controlled-release fertilizer evenly over the soil surface, then water deeply to activate it. Mix the micronutrient or calcium packet with water and spray directly on the leaves, keeping this feeding separate in timing from the granular application. Repeat every four to six weeks during active spring and summer growth, then reduce or pause feeding entirely once the tree goes dormant in fall and winter.

For more on feeding fig trees specifically in containers, from variety selection through overwintering, see our growing fig trees in containers guide.

Frequently asked questions

What is the best fig fertiliser? The best fig fertiliser is one built specifically for figs, balancing nitrogen, potassium, and calcium rather than a generic all-purpose blend. Look for a formula that includes micronutrients like iron, zinc, and magnesium, since figs commonly show deficiencies in these even when NPK levels look adequate on paper.

What's good food for a fig tree? Good food for a fig tree combines a controlled-release granular fertilizer for steady root feeding with a foliar micronutrient spray for faster correction of deficiencies. This two-part approach matches how figs actually take up nutrients, through both roots and leaves, rather than relying on soil feeding alone.

Is this fertilizer safe for potted fig trees? Yes. These formulas are built specifically for container-grown figs and designed to avoid the root burn or salt buildup that a heavier, less controlled application can cause.

Can I use this on young fig trees? Yes, the smaller kit is sized for establishing young trees in three to seven gallon containers.

How often should I fertilize my fig tree? Every four to six weeks during active growth is the general guideline, tapering off and pausing entirely once the tree goes dormant for winter.