Magnolia poasana (Pittier) Dandy
Poas Magnolia, Candelilla
Bloom Time: November through July
Magnolia poasana is a sub-tropical to tropical sub-canopy tree that grows up to 100 feet (30 m) tall. Leaves are glossy, glabrous, elliptic, up to 4.8 inches (12 cm) long, and up to 2 inches (5 cm) wide. The bark is smooth, reddish-brown with a gray cast. Flowers are bisexual, up to 4 inches (10 cm) in diameter, with 6 spatulate white petals and 3 gray membranous sepals. A perianth is formed of a yellowish-white corolla. The flowers bloom from November through July, peaking in February, March, and April.
USDA hardiness zones 8a to 10b: from 10 °F (−12.2 °C) to 40 °F (+4.4 °C).
How to Grow and Care
Although different species of Magnolia can tolerate slightly different conditions. In general, they will do best with slightly acidic, moist, loose, well-draining soil. To mimic Magnolia's natural conditions, amend heavy soil with peat moss and compost. Grow best in USDA hardiness zones 7 to 10, depending on variety, with a few cultivars hardy to zone 5. Full sun to partial shade. Moist, peaty soil can help Magnolias tolerate the full sun. If you push the cold tolerance limits, avoid planting them in southern exposure since the leaves can be damaged by the winter sun, and flowers may open prematurely. Magnolias benefit from irrigation in the first few years, and then they are tolerant of moderate drought.
They need room to grow to their full mature size and width. So, while looking small when first planted, they will grow to fill up space over time.
Some Magnolia varieties don't bloom until 15 years old, so be sure to choose one that fits your needs and expectations. Grafted plants (rather than seed-grown) bloom sooner.
See more at How to Grow and Care for Magnolias.
This species is native to high-altitude forests in Costa Rica.
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