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Puerto Rico magnolia

Magnolia portoricensis · Magnoliaceae

Puerto Rico magnolia (Magnolia portoricensis)
Photo: (c) Kurt Miller, some rights reserved (CC BY-SA) · CC BY-SA · via iNaturalist

Puerto Rico magnolia (Magnolia portoricensis) is a perennial tree in the Magnoliaceae family. It is native to North America. USDA records it as hardy in zone 11 and warmer, down to about 40°F.

At a glance

Typetree USDA
Lifecycleperennial USDA
Native statusnative USDA
Mature height77 ft USDA
Lightshade USDA
Growth rateslow USDA
Soil pH5–7.5 USDA
Flower colorWhite USDA
Hardiness zones11 and warmer USDA
Guild layercanopy Derived

USDA quoted from the USDA PLANTS database · Derived computed by a fixed rule from those columns. No value on this page is estimated.

Growing conditions

It tolerates full shade. Its drought tolerance is rated none — it needs reliable moisture. It is recorded on soils from pH 5 to 7.5 — a broad range that spans acidic through mildly alkaline ground. Its cold limit is zone 11.

Size and growth

At maturity it reaches about 77 ft, making it a large tree that will dominate its site. It grows slowly.

Foliage, flower and season

Summer foliage is dark green, coarse in texture. Its flowers are conspicuous. Its fruit or seed heads are conspicuous, extending interest past flowering. Its active growth period is year round. Its winter foliage is dense, which makes it useful for year-round screening.

What the site needs to provide

USDA records it across sites receiving 43 to 88 inches of annual precipitation. It needs at least 365 frost-free days to finish its season. It roots to at least 36 inches. Fertility requirement: medium.

Propagating it

Seed is the only propagation method USDA lists. Division and cuttings are not listed as options. USDA records no cold-stratification requirement, so seed should germinate without a chilling period.

Resilience and wildlife

Browsing animals rate it barely palatable — the sourced basis for calling it deer-resistant.

Role in a guild

Canopy. In a layered planting this is the tallest layer of a planting — it sets the light budget everything beneath it lives on. The layer is derived by a fixed rule from growth habit and mature height.

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Tags

evergreenclay-tolerantsandy-soildeer-resistantnativeshade-tolerantslow-growingcanopy

Related plants

Others in Magnolia

Similar role and hardiness

Where this data comes from

Every value on this page comes from the USDA PLANTS database record for symbol MAPO2, or is computed from those values by a fixed rule. Nothing here is estimated or model-generated. Where USDA publishes no value, this page omits the claim rather than filling the gap.

Read our full data sources and methodology.

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