Tree · Myrtaceae
Guava
Psidium guajava
Give it full sun, warmth, and shelter from frost, and a guava tree turns a bright corner into a source of fragrant fruit for years.
Full sun
Every 5–10 days
90–150 days
USDA 9–11
Overview
Guava is a fast-growing tropical tree of the myrtle family, born in the American tropics and now settled across the warm corners of the world. It can rise 10 to 30 feet (3 to 9 m), yet in most home settings it is kept low and shapely, an easy anchor for a sunny patio or a courtyard where the fragrant, vitamin-rich fruit hangs at arm's reach.
Part of its charm is how little it asks. It takes to a wide sweep of soils, from sand to limestone, and rides out a dry stretch once established, which makes it a relaxed companion to a busy household. Cold is its single caution, since a night near freezing scorches the tender growth.
Where winters stay gentle, a guava eases into the landscape and begins cropping within a few years, a living centerpiece for the outdoor room. In cooler places it lives happily in a generous pot that shifts under cover when frost approaches. Either way, full sun and steady warmth set the scene for the heaviest, sweetest harvest.
Care
The short version: full sun and warmth set the tone, with deep watering through flowering and fruiting and a lighter touch once the fruit colors. Feed lightly across the growing season, prune after harvest to keep fresh fruiting wood in play, and keep the tree clear of any brush with frost.
Light
Guava craves full sun for the finest fruit, though it manages in partial sun. Set in too much shade it leans toward leaves over flowers, so give it the brightest corner of the plot or terrace.
Water
Water deeply and regularly while the tree finds its feet and through flowering and fruiting. A mature tree weathers drought, but steady moisture means finer fruit, and easing back just before harvest sharpens the flavor.
Soil
This is an accommodating tree, at home in well-drained loam, sand, or even limestone. It spans a wide pH range of 4.5 to 7.0, so most garden soils will do as long as water moves freely away.
Temperature
Guava keeps company with warmth from 32°F to 95°F (0°C to 35°C) and has no tolerance for frost. A night near freezing scorches the tender growth, which makes warmth the quiet cornerstone of a productive tree.
Humidity
Everyday humidity in the 40% to 70% range agrees with guava, in keeping with the warm, mildly humid tropics of its origin. Out in the garden there is no number to chase.
Feeding
Feed monthly through spring and summer with a balanced fruit-tree fertilizer carrying micronutrients. Young trees flourish on light, frequent feeding rather than heavy doses, and an excess of nitrogen quietly trades fruit for foliage.
Pruning
Prune after harvest to lift out deadwood, keep the height gathered for easy picking, and open the canopy to light and air. Because guava fruits on new growth, a light tip prune keeps a fresh procession of fruiting shoots coming.
Repotting
A potted guava wants stepping up every 2 to 3 years, spring being the moment. Look for roots circling the pot or slipping through the drainage holes, water running straight through, and growth and fruiting that have quietly stalled.
Size & spacing
Left to itself, a guava reaches 10 to 30 feet (3 to 9 m) tall and spreads 10 to 20 feet (3 to 6 m) wide. In most gardens it is pruned well below that so the fruit stays comfortably within reach.
When to plant
Guava is a warm-climate tree with no patience for frost, so its calendar is really a calendar of warmth. Start seed in late winter under warm cover, move young trees outdoors in spring once frost has passed, and look toward late summer and fall for fruit, with a year-round harvest in the mildest, frost-free settings.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Sow: late winter to early spring in warm conditions
- Plant: spring after all danger of frost has passed
- Harvest: flowers in spring; fruit ripens late summer through fall, with some bearing year-round in frost-free climates
Hardiness
USDA hardiness zones: 9–11
Temperature: down to -7°C
Troubleshooting
Most of what goes sideways with a guava comes down to cold, pests in the fruit, or a tree given over to leaves instead of flowers. Read the signs below and step in early, before a passing setback quietly claims a season's harvest.
Scorched, sagging shoots following a frosty night
A cold night can leave the shoot tips dark and slumped by morning, and that is frost damage on a tree with little cold tolerance to spare. The soft new growth takes the hit while the trunk generally holds, so the setback tends to look graver than it proves to be. Hold the pruning shears until spring, when fresh growth traces the living line, and drape frost cloth over the canopy or wrap the trunk before the next cold spell settles in.
Fix:
- Wait until spring to prune out clearly dead wood once new growth shows the live boundary
- Protect with frost cloth, mulch, or trunk wraps during cold snaps
- Grow in a container that can be moved indoors in marginal climates
Hidden larvae in fruit that slumps and falls before its time
Slice into a ripening guava and the small larvae you may meet belong to the fruit fly, a pest that counts this tree among its favorite hosts. Once stung, the fruit turns soft, loses its color, and falls before its season is done. Gather the crop as ripening begins rather than letting it linger and soften on the branch, sleeve the developing fruit against egg-laying females, and clear the ground of every fallen fruit so the pest finds nowhere to carry on.
Fix:
- Harvest fruit early as it begins to ripen rather than leaving it to fully soften on the tree
- Bag developing fruit to exclude egg-laying females
- Collect and destroy fallen and infested fruit promptly to break the breeding cycle
Plenty of leaves but little or no fruit
A guava that reads as lush and green yet sets almost nothing is usually caught between too much nitrogen and too little sun, both of which coax the tree toward foliage rather than flowers. Old, unpruned wood adds to the drift, since the fruit forms only on fresh growth. Give it an open, full-sun position, move to a balanced fruiting feed, and prune with a light hand to invite the new shoots that carry the crop.
Fix:
- Move to or maintain full-sun exposure
- Reduce high-nitrogen fertilizer and use a balanced fruiting formula
- Lightly prune to stimulate fresh fruiting shoots
Toxicity
Guava belongs to the gentle, low-worry set. Its fruit is a well-loved food eaten skin, flesh, and seeds together, and no part of the plant is listed as poisonous to cats, dogs, or other animals. Share the ripe fruit freely, keeping portions sensible as with any treat around the house.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
A cat that wanders over for a taste of guava is in no danger, as no part of the plant is poisonous to them.
Dogs None
A small share of ripe guava sits well with a dog. Keep the helping modest, since a heavy hand with any fruit can unsettle the stomach.
Horses Safe
Guava holds nothing harmful for horses, and a graze on the leaves or fruit passes without incident.
Rabbits Safe
A little fruit suits a rabbit, provided the everyday diet leans on hay rather than sweet indulgences.
Livestock Safe
Cattle, goats, and sheep browse guava with no ill effect, and the fallen fruit has long been a familiar forage across the tropics.
Birds Safe
Birds take to ripe guava with enthusiasm and scatter its seed far and wide, which is precisely how the tree slips into the wild.
People Safe
A cherished fruit eaten fresh or cooked, guava is good from skin to seed.
The ripe fruit is safe; as with any new food, offer pets only small amounts and avoid letting them swallow large seeds or pits of other fruits.
Varieties
Guava's named cultivars sort themselves mostly by flesh color, sweetness, and the scale of the tree. A handful recur time and again in home gardens.
Ruby Supreme
A Florida favorite whose pink flesh brings sweet, aromatic fruit and a dependable harvest.
Mexican Cream (Tropical White)
Its mild, sweet, creamy white flesh rides on a fairly compact tree that settles gracefully into a smaller garden.
Lucknow 49 (Sardar)
A celebrated Indian cultivar that carries heavy crops of large, white-fleshed fruit.
How to propagate
Guava multiplies with little fuss, and the method chosen decides whether the new tree echoes the parent. Seed is the simplest but a wildcard, while cuttings, layering, and grafting each hold a cultivar faithfully true.
SeedEasy
Spring in warm conditions · Germinates in 2 to 8 weeks; bears fruit in 2 to 4 years
Raising guava from seed asks little of a grower. Sown in the warmth of spring, it sprouts across 2 to 8 weeks, though the resulting tree wanders from its parent and waits 2 to 4 years to bear, which makes seedlings a graceful choice for rootstock or unhurried experiment.
Stem cuttingsModerate
Warm growing season · Several weeks to root under mist or high humidity
Semi-hardwood cuttings, gathered in the warm growing season, take root with a little bottom heat and a rooting hormone. Several weeks under mist or steady humidity settle them, and each one keeps faithfully to the character of the tree it came from.
Air layeringModerate
Warm growing season · Roots in about 6 to 10 weeks before severing
Air-layering offers a reliable path to a cultivar copied true to type. Worked in the warm season, the wrapped branch roots over roughly 6 to 10 weeks, and only once those roots appear is it parted from the parent to stand alone.
GraftingDemanding
Warm season onto vigorous seedling rootstock · Unions establish over several weeks
Grafting is the commercial standard for named cultivars and the surest assurance of fruit quality. Set onto vigorous seedling rootstock in the warm season, the union grows together over several weeks before the young tree comes into its own.
Myths
Guava is said to fruit only when grafted or partnered with another tree for pollination.
Guava is largely self-fertile, so a single specimen, seedlings and all, comes into fruit on its own terms. Grafting still earns its keep for a separate reason, holding a chosen cultivar steady and shortening the wait for the first crop. One tree bears with no partner alongside it.