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All You Need to Know About Fertilizing a Fig Tree

All You Need to Know About Fertilizing a Fig Tree - Nature Hills Nursery

Charlotte Weidner |

Unique, healthful, decadent, and used as fashionable clothing in Biblical times. Figs have been a 'fig'ment of our collective imagination in literature, poetry, works of art, and culinary uses for centuries!

Fig Tree

From its ornamental beauty and delicious fruit, the Fig tree has been a sought-after edible landscaping feature for years! The beloved Fig tree is a small to medium-sized, deciduous fruit tree. Botanically identified as Ficus carica, the Fig tree is also known as the common Fig or edible Fig. There are many types of Figs, and three types are edible. They are Persistent (common) Figs, caducous (Smyrna) Figs, and intermediate (San Pedro) Figs.

Fig trees are grown throughout the world for their tasty fruit and alluring good looks. It’s a fruit tree that doubles as an ornamental tree, with fragrant, tropical leaves that can reach nearly 10 inches long, deeply incised with three or five lobes. And foliage that stands in contrast against the tree’s smooth, near-white to greyish bark. You can even eat the leaves!


Fig Tree Fertility FAQs

Does My Fig Tree Need Fertilizer?

Yes! All trees, especially big flowering and fruiting trees, need some added fertility! Trees growing in containers need fertilizer more often than trees planted in the ground. But overall, Figs prefer things on the leaner side, rather than overly rich fertility.

Figs on a Tree

Fig trees also like acidic soil, so using special acid-loving fertilizer, or adding Soil Sulfur or Ammonium Sulfate at the base of the tree will help.

Mulch your tree with pine bark arborist mulch to further hold in moisture, insulate the roots, and add organic matter, while also acidifying the soil as it breaks down over time.

What is the Best Fertilizer for a Fig tree?

Use a general-purpose, slow-release, and preferably organic fruit tree fertilizer with a formula composition of 8-8-8 or 10-10-10. Choose a fertilizer that will also help maintain their preferred pH. Fruiting Fig trees given too much nitrogen can promote lots of leafy growth and not much fruit. If Figs are grown in colder regions, it may encourage new growth to not harden off properly before winter, and may increase winter damage.

Choose a nice organic, slow-release fertilizer that helps maintain slightly acidic soil conditions. They can tolerate mildly alkaline soil, but crops will not be as prolific.

Nature Hills Root Booster

Never over-apply fertilizer or use it as a cure-all in response to your tree looking stressed!

When Should I Fertilize My Fig Tree?

New Fig trees can be planted in enriched, fertile, well-drained soil with some mild, slow-release fertilizer at planting time, and don’t forget the Nature Hills Root Booster for microbial symbiotic root support for the life of the tree's root system!

New trees are best given mostly regular waterings in those first months as they work to establish. Fertilizer triggers trees to want to grow leaves and new shoots. For new trees trying to establish, the main focus is on a strong and healthy root system to support the tree for its entire life.

How Often Should I Feed my Fig tree?

Hanging Fig Trees

Consider adding an organic slow-release fertilizer if you are growing in sandier soil, or if your Fig loses vigor and the leaf color is pale green in color. Light fertilization is best added in spring, or half-rate early spring and late spring, but should not be done after the fourth of July, so you don't force new growth too late in the season.

Fig Tree Care

Common Fig trees can grow in the wild in a number of different areas of the country. You’ll find them in sunny, dry areas and rocky areas. They’re also known to grow in nutritionally poor soil, which makes them highly adaptable to the home environment! They really prefer a lower fertility and rocky and dry soil and Mediterranean climates, so Figs seem to especially love California for that reason!

However, they are quite adaptable! This makes Figs an ideal selection for a wide variety of locations! They fruit best in full sun, so provide at least 6 hours of sunlight a day. They tolerate moderate moisture and can handle drought, though they prefer a nice, warm south-facing site.

Be sure to provide moderate, consistent moisture access for the juiciest crop and the best health and longevity of your tree. Overwatering is a sure-fire method of killing your plant. So ensure it is in a well-drained location, whether it is in a pot or in the ground.

Some Figs do a little too well in some areas and have become invasive. Nature Hills uses Plant Sentry™ to prevent the sale and shipment of any plant that each state has prohibited or restricted any plant from coming to their state.

Purple Figs

Fig Tree Pollination

Closed eye vs Open Eye? Partially Open/Closed? Resin Closed? What does this all mean?

In the wild, Fig trees are pollinated by very small wasps of the family Agaonidae. The Figs themselves are technically not a fruit but rather a swollen stem part and ripen from pollinated 'inverted flowers'. Their flowers bloom inside the pear-shaped pod, which later matures into the fruit we eat. Filled with hundreds to thousands of tiny seeds.

The eye, or ostiole, can be open or closed. While not completely exposing the interior of the pulp and fruit, it is where the small wasps can enter that pollinate the flower and help contribute to the production of the fruit.

Most Figs no longer need the wasp for pollination and have been bred to have a tight, closed, or sealed eye.

Closed Eye

Closed-eye Figs that have a closed or plugged 'eye' at the base of the fruit are often a highly sought-after trait, especially in the humid South and rainy Northwestern US. Open-eyed Figs could cause significant insect and disease issues and can sour the fruit.

Open Eye

Open-eyed Figs, having a partially open or plugged eye (plugged with dried juices, honey, or resin) left over from pollination purposes. This doesn’t mean your fruit is full of bugs or eggs, nor does it mean your fruit is going to go bad. But these Fig trees tend to do better in arid or cooler growing zones.

Is There a Wasp in Every Fig?

No! In the wild, female Agaonidae wasps lay eggs within a fig fruit. The fruit then fills with tiny edible seeds as it matures. So that crunch when eating a Fig isn’t the eggs or the wasps!

By the time you eat native Fig species, all signs or remains of wasps and their eggs and larvae have either exited the Fig or they’ve been absorbed and or expelled from the fruit! It’s all part of nature, and best not to think about it too long. Just wash any fruit or veggie well before eating, and you are good to go!

Fig Tree Harvest

Cut Open Fig

With the common Fig tree, you can expect one or two crops of Figs to be produced each year. On Figs that have second crops, the first crop, known as the breba crop, develops in the spring on last year's shoot growth. The second crop is the main crop, and it develops on the current year's shoot growth, ripening in late summer or fall.

Learn about knowing if your harvest is ripe or not by reading our Garden Blog here! But generally, once the fruit droops heavily from their branches instead of growing almost parallel, and they're soft and yielding to the touch (but not soggy), and you may see a droplet of dew at the eye.

Pruning Your Fig Tree

Depending on the type of Fig you have, it's best to prune in the late winter or early spring, or only prune the branches that have just fruited, especially if you have a breba-type Fig tree. Pruning when dormant is best because pruning cuts in the growing season will bleed white sap.

  • Remove competing leaders or weak branch crotches
  • Remove crossing, rubbing, interior-growing branches, and any damage
  • Remove old growth and allow for vigorous new growth to take its place
  • Remove water sprouts and suckers
  • Allow for an open canopy for air circulation and sunlight to ripen the interior fruit

If your Fig tree is putting too much of its energy into branch and leaf growth, rather than setting fruit, identify the new growth branches. They'll be more flexible than old-growth. While this will interfere with breba crop production, you can pinch off the tips. This will encourage them to focus on fruit instead of continuing with new growth. It will not stunt your tree; however, it is best to just let them grow a bit wild in the back border of your yard, so you can enjoy the most fruit possible throughout the year.

Many trees produce best when trained into a fan or scaffold shape, maintained smaller for easy harvest and when kept bushy. You can even take things next level and try Espalier pruning your tree!

Pruning Fig Tree

Fig trees do have a milky sap that, for some gardeners, can be irritating and photoreactive in the sun, causing a reaction on the skin. Gloves and long sleeves are recommended whenever handling, caring for, and maintaining these plants. That being said, we’d advise not using the leaves as a fashion statement.

Some of Nature Hills' Top Favorite Fig Trees

  • Peter's Honey Fig - Unique green skin & pink flesh. Zones 6-10
  • Violette de Bordeaux Fig - Luxuriously sweet & juicy. Zones 7-10
  • Brown Turkey Fig - Tasty, easy-care & cold hardy Zones 5-9
  • Chicago Hardy Fig - Easy to grow & adaptable. Zones 5-10
  • Panache Tiger Fig - Striped fruit & variegated foliage! Zones 8-10

Delicious, Healthy & Ornamental

Figs on a Table

Get ready for Fig jam, fresh Figs served on artisan bread with goat cheeses drizzled with honey, added to salads, tarts, quartered, and served on an upscale charcuterie, or some delicious chutney, baked goods, and desserts! Baked, broiled, or grilled, they can be freshly eaten too!

Figs contain calcium, copper, magnesium, potassium, phosphorus, and iron, as well as Vitamins A, B6, C, and K, plus they are high in natural sugars and very high in fiber. Eaten fresh, dried, made into preserves, or baked, the possibilities are endless!

You’ll find a fine selection of high-quality Fig trees for sale at Nature Hills Nursery! So grace your yard with one of these delightful and unique fruit trees and see what all the foodies, ancient literature, and old-world fashionistas are going on about!

Happy Planting!

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Frequently Asked Questions

How much fertilizer should I apply to a newly planted fig tree in the first year?

For newly planted fig trees, apply a balanced 10-10-10 fertilizer at half the recommended rate, typically 1-2 tablespoons per tree, in early spring after the last frost. Avoid fertilizing in the first 4-6 weeks after planting to allow roots to establish without salt burn risk. Young figs need gentle feeding since over-fertilization promotes excessive leaf growth at the expense of fruit production. Water thoroughly after application and monitor new growth to ensure the tree is responding well before any additional feeding.

Can I fertilize my fig tree in the fall or winter without harming it?

Avoid fertilizing fig trees in fall or winter, as this encourages new growth that won't have time to harden off before frost, making the tree vulnerable to cold damage. In zones 6-8, stop all fertilization by late August, while gardeners in zones 9-10 should cease feeding by early September. Winter fertilization can also interfere with the tree's natural dormancy period, reducing its cold hardiness and overall health. Apply your last feeding of the season 6-8 weeks before your area's first expected frost date to allow proper hardening.

What are the signs of over-fertilizing a fig tree?

Signs of over-fertilizing a fig tree include excessive leafy growth with few or no fruits, delayed fruit ripening, and increased susceptibility to frost damage in zones 6-9. You may also notice soft, weak branches that break easily and leaves that appear overly lush and dark green. If you see these symptoms, stop fertilizing immediately and reduce watering to help the tree redirect energy toward fruit production rather than foliage growth.

Is compost tea a good fertilizer option for fig trees, and how do I make it?

Yes, compost tea is an excellent organic fertilizer for fig trees, providing gentle, slow-release nutrients without the risk of burning roots. To make it, steep 1 cup of finished compost in 1 gallon of water for 24-48 hours, then strain out the solids. Apply this diluted mixture every 2-3 weeks during the growing season (spring through mid-summer) by watering it directly around the root zone. For best results, use the tea within a few days of brewing and always water your fig tree with plain water first if the soil is dry.

How do I fertilize a potted fig tree during winter indoors?

During winter dormancy indoors, potted fig trees require minimal to no fertilization as their growth slows dramatically and nutrient uptake decreases significantly. If your fig shows signs of nutrient deficiency, apply a diluted liquid fertilizer at quarter strength once monthly maximum, using a balanced 10-10-10 formula. Most indoor figs in zones 7-11 that are overwintering will thrive without any winter feeding from November through February. Resume regular fertilizing in early spring when you notice new leaf buds beginning to swell.

Should I adjust fertilizer for fig trees in USDA zone 7 or colder areas?

In USDA zones 7 and colder, reduce nitrogen fertilizer applications by half compared to warmer zones to help fig trees harden off before winter. Stop all fertilizing by mid-July in zone 7 and early July in zones 6 and below to prevent tender new growth that's susceptible to frost damage. Focus on applying a balanced 10-10-10 fertilizer only in early spring when new growth begins. This adjusted schedule helps your fig tree survive harsh winters while maintaining healthy fruit production.

What role does Epsom salt play in fertilizing fig trees?

Epsom salt provides magnesium sulfate, which helps fig trees produce chlorophyll and supports fruit development, particularly important in zones 6-10 where figs are commonly grown. Apply 1-2 tablespoons per mature tree around the drip line in early spring before new growth begins, watering thoroughly afterward. Signs your fig tree needs magnesium include yellowing leaves with green veins and poor fruit set. Use Epsom salt as a supplement to regular fertilization, not as a replacement for balanced nutrition.

How do I correct nutrient deficiencies like yellow leaves on my fig tree?

Yellow leaves on fig trees typically indicate nitrogen deficiency, especially if older leaves turn yellow first while veins remain green. Apply a balanced fertilizer like 10-10-10 at a rate of 1 pound per inch of trunk diameter in early spring, or use organic compost around the base. For immediate correction, apply liquid fertilizer every 2 weeks during the growing season until new growth appears healthy green. Test your soil pH to ensure it's between 6.0-6.8 for optimal nutrient uptake.

Is organic fertilizer better than synthetic for young fig trees?

Organic fertilizer is generally better for young fig trees because it releases nutrients slowly and improves soil structure without risk of burning tender roots. Synthetic fertilizers can easily over-stimulate young trees, causing excessive leaf growth at the expense of root development and cold hardiness in zones 6-9. Apply 2-3 inches of compost around the base in early spring, or use a balanced organic fertilizer like 4-4-4 at half the recommended rate. Wait until your fig tree is established (after its second growing season) before considering synthetic options.

How far from the trunk should I spread granular fertilizer for fig trees?

Spread granular fertilizer from 6 inches away from the trunk out to the drip line (the edge of the canopy) of your fig tree. For young trees under 3 years old, apply fertilizer in a 3-foot circle around the tree. Mature fig trees benefit from fertilizer spread 4-6 feet from the trunk in all directions, as their feeder roots extend well beyond the canopy. Water thoroughly after applying to help nutrients reach the root zone.

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