Chico Manilkara zapota

About Chico

Chico, scientifically known as Manilkara zapota, is a long-lived tropical evergreen tree belonging to the family Sapotaceae. Known internationally as sapodilla, naseberry, or chicozapote, it is one of the most common and beloved backyard fruit trees in the Philippines. The fruit is roughly egg-shaped to round, 5 to 10 cm in diameter, with a thin brown skin covering soft, translucent brown flesh that has a distinctive flavor often compared to brown sugar, caramel, or pear with hints of cinnamon. Each fruit contains 3 to 5 hard, black, glossy seeds with a small hook on one end.

The tree itself is a handsome evergreen that grows 10 to 15 meters tall in the Philippines, with a dense, rounded canopy of dark green, glossy leaves. The bark is grey-brown and deeply fissured, exuding a white, milky latex (chicle) when wounded. This latex is the same substance that served as the original base for commercial chewing gum — a fact that gives the tree global historical significance beyond its value as a fruit producer. The wood, known locally as "tisa," is among the hardest and most durable tropical timbers, naturally resistant to termites and rot.

What makes chico particularly valuable in Philippine home gardens is its combination of drought tolerance, low maintenance requirements, year-round fruiting, and dual-purpose value as both fruit and timber tree. Unlike seasonal fruits such as lanzones or mangoes, a mature chico tree produces fruit throughout the year with peak harvests during the dry season. This reliability, combined with minimal pest and disease problems, makes chico one of the easiest and most rewarding fruit trees for Filipino gardeners at any skill level.

In Philippine markets, chico fruit sells for 60 to 120 pesos per kilogram depending on size and quality. The fruit is eaten exclusively fresh when soft-ripe — it has no cooking applications due to its delicate texture and sweet flavor. It is a familiar sight at roadside fruit stands across Luzon and the Visayas, often sold alongside mangoes and bananas as a staple dessert fruit.

History and Discovery

Manilkara zapota was originally described by Carl Linnaeus in 1753 under the name Achras sapota, and was later reclassified into the genus Manilkara by the Dutch botanist Pieter van Royen. The genus name Manilkara derives from a local Venezuelan name for a related species, while zapota comes from the Nahuatl (Aztec) word "tzapotl," meaning soft, sweet fruit. The common name "sapodilla" is a Spanish corruption of the Nahuatl "tzapotl," and the Filipino name "chico" derives from the Spanish "chicozapote."

The tree is native to southern Mexico, Central America, and the Caribbean, where it was cultivated by the Maya and Aztec civilizations for both its fruit and its chicle latex. The ancient Maya chewed chicle latex as a stimulant and digestive aid, and the practice continued through the Spanish colonial period. Spanish and Portuguese colonizers introduced sapodilla throughout their tropical territories during the 16th and 17th centuries, bringing it to the Philippines via the Manila-Acapulco galleon trade. The tree adapted superbly to Philippine conditions and has been a fixture of Filipino home gardens for over 400 years.

The global significance of chico expanded dramatically in the 1860s when American inventor Thomas Adams began experimenting with chicle as a rubber substitute. When that failed, he flavored it and created the first commercially successful chewing gum. For nearly a century, chicle harvested from sapodilla trees in Mexico and Guatemala was the primary base for the global chewing gum industry. Though synthetic polymers have largely replaced chicle today, the tree's historical connection to one of the world's most popular confections remains a fascinating piece of agricultural history.

How to Plant Chico

Propagation methods: Seed, Grafting, Marcotting (air-layering)

Germination time: 14 to 28 days from fresh seed

Best planting season in the Philippines: June to August, onset of rainy season (though chico tolerates year-round planting)

Step-by-Step Planting Guide

1. Select your planting material. Choose fresh seeds from ripe chico fruit — wash off all flesh and plant within a few days for best germination rates. Seeds remain viable for several weeks if kept dry, unlike lanzones. For faster fruiting (3 to 4 years instead of 5 to 8), purchase a grafted seedling from an agricultural nursery. Grafted trees also allow selection of improved varieties with larger or sweeter fruit.
2. Choose your planting site. Select a permanent location with full sun — at least 6 to 8 hours of direct sunlight daily. Chico is tolerant of various soil types including sandy, rocky, and even slightly saline soils, making it adaptable to coastal areas. Allow at least 8 meters from structures, as the tree develops a broad canopy and extensive root system. Good drainage is important, but chico handles dry conditions far better than wet ones.
3. Prepare the planting hole. Dig a hole 50 cm wide and 50 cm deep. Mix the excavated soil with compost or aged manure in a 3:1 ratio. For sandy soils, increase the proportion of compost to improve water retention during establishment. Plant seeds 2 cm deep, or position grafted seedlings at the same depth as their nursery container. Water thoroughly after planting.
4. Water during establishment. Water two to three times per week during the first year, particularly during dry months. Once the tree is established and showing healthy new growth (typically after 12 to 18 months), reduce watering dramatically. Established chico trees are remarkably drought-tolerant due to their deep taproot and can survive extended dry periods without irrigation in most Philippine locations.
5. Fertilize for healthy growth. Apply balanced fertilizer (14-14-14) quarterly during the first 3 years at a rate of 100 to 200 grams per application, increasing as the tree grows. Mature chico trees are famously low-maintenance and produce well even without regular fertilization. An annual application of compost or aged manure around the dripline is sufficient to maintain good fruit production in most Philippine backyards.
6. Harvest ripe fruit. Chico begins fruiting in 5 to 8 years from seed, or 3 to 4 years from grafted stock. The tree fruits year-round in the Philippine climate with peak production during the dry season (February to April). Harvest fruit when the skin is uniformly brown and the surface feels slightly rough rather than smooth. A gentle scratch on the skin should show brown (ripe) rather than green (unripe) beneath. Allow harvested fruit to soften at room temperature for 2 to 3 days before eating.

Care Guide

Sunlight

Requirement: Full Sun

Chico thrives in full sun with 6 to 8 hours of direct sunlight daily. It produces best in open, unshaded locations where it can develop its characteristically dense, rounded canopy. Young trees tolerate light shade but will grow more slowly and produce fewer flowers. In the Philippine landscape, chico performs excellently in open backyards, along property boundaries, and in parks and schoolyards where it receives unobstructed sunlight throughout the day.

Water

Frequency: Once per week (established trees rarely need watering)

Chico is one of the most drought-tolerant fruit trees available to Filipino gardeners. Once established (after the first 12 to 18 months), the tree's deep taproot system accesses groundwater effectively and requires minimal supplemental irrigation. In most Philippine locations, natural rainfall is sufficient for mature trees even during the dry season. Overwatering is actually more harmful than underwatering — chico roots are susceptible to rot in waterlogged soil. Water newly planted trees regularly during their first dry season only.

Soil

Type: Highly adaptable — Sandy, Loam, Clay-Loam, Rocky, Slightly Saline

pH Range: 6.0 to 8.0

Chico is famous for its tolerance of poor and challenging soil conditions. It grows successfully in sandy coastal soils, limestone-derived rocky soils, laterite clay, and even slightly saline conditions near the sea — situations where most other fruit trees would fail. The tree's preference is for well-drained sandy loam, but it produces acceptable fruit in almost any Philippine soil that is not permanently waterlogged. This remarkable adaptability makes chico an excellent choice for marginal lands and difficult growing sites.

Humidity and Temperature

Humidity: 50 to 85%

Temperature: 25°C to 40°C

Chico is well-suited to the full range of Philippine lowland climates, from the relatively drier western Luzon coast to the humid eastern Visayas. It tolerates high temperatures up to 40°C without stress and is not affected by the intense summer heat that damages many other fruit crops. The tree cannot tolerate frost or prolonged cold below 10°C, restricting it to tropical lowland cultivation. Philippine conditions from sea level to approximately 800 meters elevation are ideal for chico production.

Fertilizer

Chico is a low-maintenance tree that produces well even with minimal fertilization — a characteristic that has contributed to its popularity as a Filipino backyard tree. For optimal production, apply complete fertilizer (14-14-14) twice yearly: once at the start of the rainy season (June) and once at the start of the dry season (November). Mature trees respond well to an annual ring of compost or aged manure spread around the dripline. Avoid excessive nitrogen, which promotes vegetative growth at the expense of fruit production.

Pruning

Chico requires very little pruning due to its naturally symmetrical, rounded growth habit. Remove dead, diseased, or crossing branches annually. Light thinning of the interior canopy can improve air circulation and fruit quality, but heavy pruning is unnecessary and not recommended — the tree naturally maintains an attractive shape. If height becomes an issue for harvesting (trees can reach 15 meters), some growers top the central leader at 6 to 8 meters to keep fruit within reach of standard picking poles. The tree responds well to this but may take a season to resume full production.

Growing Medium Options

Chico is exclusively a soil-grown tree due to its large size (10 to 15 meters), deep taproot system, and long productive lifespan. The tree's extraordinary tolerance of poor soils actually makes it one of the best choices for challenging Philippine sites — sandy coastal plots, rocky hillsides, and nutrient-depleted urban lots where other fruit trees refuse to thrive. Neither hydroponic nor water culture systems are practical for this species. The deep taproot that gives chico its drought tolerance requires ground planting with unrestricted downward root access.

Edible Uses and Nutrition

Edible parts: Fruit flesh (when fully ripe only)

Culinary Uses

Chico is eaten exclusively as a fresh dessert fruit in the Philippines. The ripe flesh has a uniquely sweet flavor often described as a combination of brown sugar, caramel, and pear with subtle hints of cinnamon and vanilla. To eat, simply cut the ripe fruit in half, remove the black seeds, and scoop out the soft, translucent brown flesh with a spoon — or bite directly into it as most Filipinos do. The thin skin is edible but is usually peeled away by preference.

Unlike versatile cooking fruits such as santol or calamansi, chico is not typically used in cooked dishes due to its delicate sweetness and soft texture that breaks down with heat. However, the fruit can be blended into smoothies, milkshakes, and ice cream for a distinctive caramel-flavored dessert. Some Filipino households make chico jam by combining the mashed flesh with sugar and calamansi juice, though this is uncommon. The fruit is also occasionally dried into fruit leather in Mindanao, producing a chewy, intensely sweet snack.

An important caution: unripe chico fruit contains high levels of tannins and latex, making it extremely astringent and completely inedible. Eating unripe chico causes an intensely unpleasant dry, chalky, puckering sensation in the mouth that can last for hours. Always wait until the fruit is fully soft before eating. The transition from unripe to ripe happens rapidly — check fruit daily once it begins to soften.

Nutritional Highlights

Harvest time: Year-round in the Philippines, with peak production during the dry season (February to April). Trees produce continuously once mature.

Storage: Ripe chico is highly perishable, lasting only 2 to 3 days at room temperature once soft. Slightly firm fruit can be kept at room temperature for 3 to 5 days until fully ripe. Refrigeration extends shelf life of ripe fruit to about one week. Market price ranges from 60 to 120 pesos per kilogram. Pick fruit slightly before full ripeness for transport; it will continue to soften off the tree.

Air Quality and Oxygen Production

Chico is an excellent urban tree for air quality improvement due to its dense, evergreen canopy that maintains full leaf coverage year-round without the seasonal leaf drop characteristic of some other Philippine fruit trees. The thick, leathery leaves are effective at trapping airborne particulate matter, and the tree's large total leaf surface area provides continuous oxygen production and carbon dioxide absorption throughout the year. As an evergreen species, chico never has a "dormant" period of reduced photosynthesis in Philippine conditions.

CO₂ absorption: Moderate to High

The combination of evergreen foliage, moderate to large size, long lifespan (chico trees can live well over 100 years), and dense wood makes this species an effective long-term carbon sink. The extremely hard, dense tisa wood locks carbon into a durable form that persists for decades even after the tree is harvested — tisa lumber in old Philippine houses can be over a century old and still structurally sound. For urban greening projects, chico offers the dual benefit of continuous air filtration plus eventual timber value, making it an economically and environmentally sound planting choice.

Toxicity and Safety

Humans: Non-toxic (ripe fruit)

Pets: Non-toxic — safe around cats and dogs

Ripe chico fruit is completely non-toxic and safe for all ages, including young children, pregnant women, and elderly individuals. The soft, sweet flesh is gentle on the digestive system and is often recommended as a fruit for toddlers and those with sensitive stomachs. The seeds, while non-toxic, have a small hooked point on one end and should be removed before serving to young children to avoid throat irritation if accidentally swallowed.

The white latex sap that oozes from the bark and unripe fruit is not systemically toxic but can cause skin irritation and a sticky residue on hands and clothing. Contact with latex should be washed off with cooking oil followed by soap and water. The most important safety consideration is avoiding consumption of unripe fruit, which — while not poisonous — is extremely astringent due to high tannin and saponin content, causing intense oral discomfort that resolves on its own within hours.

Common Pests and Diseases in the Philippines

Pests

• Fruit fly (Bactrocera spp.) — lays eggs in ripening fruit, causing larvae to develop inside the flesh. Control with protein bait traps, fruit bagging, or early harvest of mature fruit before full ripeness.
• Leaf miner — larvae tunnel between leaf surfaces, creating visible silvery trails. Damage is usually cosmetic and rarely affects tree health or fruit production. Remove heavily infested leaves.
• Scale insects — hard or soft scales encrust branches and trunk, sucking sap from the tree. Apply horticultural oil spray during dry weather to smother populations.

Diseases

• Leaf spot (Phyllosticta) — brown spots on leaves during prolonged wet weather. Generally not serious for mature trees. Improve air circulation through light pruning of dense canopy sections.
• Sooty mold — black fungal coating associated with honeydew-producing insects. Control the insect source to eliminate the mold. Mold washes off with rain once the insect problem is resolved.
• Root rot — occurs only in waterlogged soils, which is why good drainage is the single most important planting-site consideration. Chico planted in well-drained locations rarely experiences any root disease.