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Psidium guajava

Guava · Guava Tree · Guave Tree

Family MyrtaceaeGenus Psidium

A branch of broad ribbed leaves, rain-beaded and yellow-green, held toward the camera by a hand at the lower edge.
LeafChirocca77CC0

About the plant

What it is and where it grows — not part of any germination protocol.

The plant

Habit
shrub or treePlants of the World Online
Habit
Perennial, Shrub, TreePLANTS Database
Height
25.0 ft7.6 mPLANTS Database
Flower
WhitePLANTS Database
Blooms
SpringPLANTS Database

Growing conditions

Sun
Shade tolerance: MediumPLANTS Database
Soil
Adapted to coarse, medium, fine textured soilsPLANTS Database
Soil pH
5.5-7.0PLANTS Database
Moisture
Moisture use: MediumPLANTS Database
Watering
Drought tolerance: MediumPLANTS Database

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Plants of the World Online — Royal Botanic Gardens, Kew; PLANTS Database — USDA NRCS.

Worth knowing

  • Native to South America; when grown, honey bees are its main pollinators. In some tropical places it is invasive, and it has become a major problem in the Galápagos. Wikipedia: Psidium guajava

Protocol

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 35 days to germinate.

65% germination in 21–35 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Psidium p. 56Public domain
Show the original text
Psidium (Myrtaceae). P. guajava (KR) germ. 70D(65% in 3-5 w), and GA's had no effect.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Psidium p. 56. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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