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Psidium guajava
Common guava
Psidium guajava
Psidium guajava, commonly known as guava, is a tropical tree native to Central America, but is now cultivated in many tropical and subtropical regions worldwide. It is prized for its edible fruits, which are round or pear-shaped, and have a sweet, fragrant flavor. The tree has smooth, thin bark and opposite, oblong leaves. Guava trees can grow up to 30 feet tall and produce fruit multiple times a year under ideal conditions.
CategoryDetails
Plant TypePerennial plant
Culinary UsageEdible plant
Medicinal UsageMedicinal Usage
Duration to maturity6 months to harvest
Estimated Plant Lifespan30 years lifespan
Sun Requirements6+ hours direct sunlight (Full Sun)
Pollination

Method: Animal

Notes: Guava trees are pollinated by insects and birds. For increased fruit production, hand pollination can be done by transferring pollen with a small brush.

Watering Requirements

Method: Deep Watering

Frequency: Water deeply when the soil surface is dry to the touch.

Notes: Guavas benefit from regular watering, especially during fruit development and dry spells. Avoid overwatering, which can lead to root rot.

Humidity Requirements

Level: Moderate

Maintenance: Provide good air circulation to prevent fungal diseases.

Cleaning RequirementsPrune guava trees regularly to maintain shape, remove dead or diseased branches, and promote air circulation. Fertilize regularly, especially during fruiting seasons, and protect young trees from cold temperatures.
Temperature Range

Min: 15°C

Max: 35°C

Cultivars

Starlings White

Price: $129
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Price: $46.95
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Ocimum basilicum
Sweet basil
Ocimum basilicum
Basil can help repel some pests that may affect guava trees, such as whiteflies and aphids.
Tagetes patula
French marigold
Tagetes patula
Marigolds are known to deter nematodes, which can be harmful to guava trees' roots.
Guava Moth (Argyresthia eugeniella)

The larvae bore into the fruit, causing damage and making them unmarketable. Symptoms include small holes in the fruit and premature fruit drop.

Scale Insects

Scale insects suck sap from the leaves and stems, leading to yellowing of leaves, stunted growth, and potential dieback. They appear as small, immobile bumps on the plant.

Aphids

Aphids suck sap from young shoots and leaves, causing them to curl and distort. They also excrete honeydew, which can lead to sooty mold growth.

Steps:

    • From seed: Collect seeds from ripe guavas, wash them, and dry them.
    • Sow seeds in a well-draining seed starting mix.
    • Keep the soil moist and provide adequate sunlight.
    • Transplant seedlings to larger pots when they have developed several leaves.
    • From cutting: Take semi-hardwood cuttings (6-8 inches) from healthy branches.
    • Remove the lower leaves and dip the cut end in rooting hormone.
    • Plant the cutting in a well-draining potting mix.
    • Keep the soil moist and provide a humid environment until roots develop.

Neem Oil

To control pests such as scale insects, aphids, and whiteflies.

Potassium Fertilizer

To promote fruit development and overall tree health.

Compost

To improve soil fertility and drainage.