
© Kurt Miller · CC BY-SA
iNaturalist — CC, credited & licensed per image

Apocynaceae family
Palo Amargo Rauvolfia nitida
Native
USDA livestock toxicity rating — not a pet assessment. See the Toxicity detail further down for what's documented.
Palo Amargo is a perennial tree native to Puerto Rico and the U.S. Virgin Islands. It grows to 23 ft and blooms Jul in full sun, with red fruit.
Growing & care
USDA PLANTS · TRY Conditions
Sources · Conditions
USDA PLANTS — Sun
USDA — SoilPH — Soil pH
USDA PLANTS (DwCA, Zenodo 17903503) — Fertility Requirement / Soil Adaptation — Fertility need · Adapts to
USDA — Temp-Min °F — Hardiness
- Sun
- Full sun
- Soil pH
- 6–8.5
- Fertility need
- Medium
- Adapts to
- Medium (loam), Fine (clay)
- Hardiness
- USDA zone 11+
Size & form
Sources · Size & form
USDA PLANTS (DwCA, Zenodo 17903503) — Height, Mature — Height
USDA PLANTS (DwCA, Zenodo 17903503) — Planting Density (per acre) — Spacing
USDA PLANTS (DwCA, Zenodo 17903503) — Growth Rate / Spread / Growth Form / Lifespan / Active Growth Period / Seed Period — Growth form · Active growth
USDA PLANTS — Lifespan
TRY Plant Trait Database (CC BY 4.0) · USDA PLANTS — Foliage
USDA PLANTS (DwCA, Zenodo 17903503) — Fruit/Seed Color / Fruit Persistence — Fruit
- Height
- 23 ft
- Spacing
- 8–12 ft apart from USDA planting density
- Growth form
- Single crown
- Lifespan
- Perennial
- Foliage
- Broadleaf · coarse texture
- Active growth
- Year-round
- Fruit
- Red persists into winter
In the garden
Sources · In the garden
USDA PLANTS (DwCA, Zenodo 17903503) — Propagation Method / Commercial Availability — Propagate by
USDA PLANTS (DwCA, Zenodo 17903503) — Germination (cold stratification) — Seed starting
USDA PLANTS — Seed Period — Seeds ripen
USDA PLANTS (DwCA, Zenodo 17903503) — Foliage Texture / Browse Palatability / Resprout — Resprouts if cut
- Propagate by
- Seed
- Seed starting
- No stratification needed
- Seeds ripen
- Summer – Autumn seed-collection / harvest window
- Resprouts if cut
- No
Sub-canopy / understory layer — Sits in the understory of a layered food forest or polyculture.Open guide →
derived roles The garden year bloom → fruit → fall colour
J
F
M
A
M
J
J
A
S
O
N
D
Bloom
Bloom (the flower's colour)
Bloom · Jul — USDA PLANTS (DwCA, Zenodo 17903503) — BloomPeriod
When to sow · for your area
Sow timing keys off your local last- and first-frost dates.
Species characteristics from USDA PLANTS (public domain) + TRY (CC BY) — general guidance, not a
guarantee for your exact site. Deer "browsing" is documented palatability, not a deer-proof claim.
Wildlife & pollinators
How pollinator value is scored →Wildlife & visitors 3 nectaring
Open records of who else uses Palo Amargo — a generalist food-web signal, kept separate from the keystone Ecological Value.
3 adult butterfly & moth species are recorded nectaring at its flowers:
Interaction records (observations, not exhaustive) from
GloBI → (CC0). Counts are distinct species; names are the most-recorded. Common names from Wikidata (CC0).
Species thumbnails re-hosted from iNaturalist — Creative Commons, credited per image (hover for credit). Click any species to see it on iNaturalist. Not exhaustive; many taxa have no openly-licensed photo yet.
Sources for this entry (22) Open & cited
[01] Scientific name & family — USDA PLANTS (DwCA, Zenodo 17903503)
[02] Growth habit & duration — USDA PLANTS (DwCA, Zenodo 17903503)
[03] Native status & distribution — USDA PLANTS (DwCA, Zenodo 17903503)
[04] Common name — USDA PLANTS (via GBIF)
[05] Bloom period — USDA PLANTS (DwCA, Zenodo 17903503) — BloomPeriod
[06] Height — USDA PLANTS (DwCA, Zenodo 17903503) — Height, Mature
[07] Sun / shade — USDA PLANTS (DwCA, Zenodo 17903503) — ShadeTolerance
[08] Soil & moisture — USDA PLANTS (DwCA, Zenodo 17903503) — MoistureUse / SoilPH
[09] Cold hardiness (zone) — USDA PLANTS (DwCA, Zenodo 17903503) — Temperature, Minimum °F
[10] Toxicity — USDA PLANTS (DwCA, Zenodo 17903503) — HumanLivestockToxicity
[11] Growth & form — USDA PLANTS (DwCA, Zenodo 17903503) — Growth Rate / Spread / Growth Form / Lifespan / Active Growth Period / Seed Period
[12] Soil & fertility — USDA PLANTS (DwCA, Zenodo 17903503) — Fertility Requirement / Soil Adaptation
[13] Landscape traits — USDA PLANTS (DwCA, Zenodo 17903503) — Foliage Texture / Browse Palatability / Resprout
[14] Propagation & availability — USDA PLANTS (DwCA, Zenodo 17903503) — Propagation Method / Commercial Availability
[16] Seed germination — USDA PLANTS (DwCA, Zenodo 17903503) — Germination (cold stratification)
[18] Invasive / introduced status — USDA PLANTS (DwCA, Zenodo 17903503) — native status
[19] Photos — iNaturalist — CC, credited per image
[20] Ecological value — GloBI
[21] Foliage — TRY Plant Trait Database (CC BY 4.0)
[22] Wildlife & visitors — GloBI — Global Biotic Interactions (CC0)
Spot an error or have a better photo? Every field links to its source, and the whole dataset is open.
Cite this page Open data, please attribute
PlantKey’s data is open under CC BY-SA 4.0 — free to reuse and adapt, with attribution and the same licence. Photos keep their own per-image licence + credit (see Sources above).
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