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PlantFiles: Pisonia
Pisonia rotundata

Family: Nyctaginaceae (nyk-taj-i-NAY-see-ee) (Info)
Genus: Pisonia (py-SO-nee-a) (Info)
Species: rotundata (roh-tun-DAY-tuh) (Info)

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12-15 ft. (3.6-4.7 m)

8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun
Sun to Partial Shade


Bloom Color:
Pale Green

Bloom Time:
Mid Spring


Other details:
Drought-tolerant; suitable for xeriscaping
Self-sows freely; deadhead if you do not want volunteer seedlings next season
This plant is resistant to deer

Soil pH requirements:
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
From seed; direct sow after last frost

Seed Collecting:
Collect seedhead/pod when flowers fade; allow to dry
Allow unblemished fruit to ripen; clean and dry seeds

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1 positive
No neutrals
No negatives

Gardeners' Notes:

Positive olddude On Jul 4, 2011, olddude from Big Pine Key, FL (Zone 11) wrote:

This small tree (to 16) is found only in the Lower Florida Keys. Habitat is the pine rocklands and costal rock flats. Leaves are mostly opposite, matte dark green, obovate to oblong and notched or rounded at the apex with slightly wavy margins. The flowers are grouped in cymes, light to yellowish green. The fruit is small and brown with sticky glands that tangle with clothing or hair.


This plant has been said to grow in the following regions:

Big Pine Key, Florida

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