Scrub Pine (Pinus clausa): Florida's Fire-Adapted Sand Pine

Scrub pine, also called sand pine, is a small to medium-sized evergreen conifer endemic to the sandy, well-drained scrub habitats of Florida and southern Alabama. It is uniquely adapted to fire-prone ecosystems, with serotinous cones that remain closed for years until opened by the heat of a wildfire.

Botanical Profile

• Family: Pinaceae (pine family)
• Genus: Pinus
• Species: clausa

Growth and Adaptations

Grows 20–40 feet tall, often with a twisted, irregular trunk and open, irregular crown. Needles in fascicles of 2, 2–3.5 inches long, twisted, yellow-green. Cones are 2–3.5 inches, asymmetrical, strongly serotinous (remain closed until heated by fire). Bark is thin, scaly, gray-brown. Two varieties: var. clausa (Ocala sand pine, serotinous cones) and var. immuginata (Choctawhatchee sand pine, non-serotinous).

Ecology

Dominant in Florida scrub, a rare, fire-maintained ecosystem on ancient sand dunes. Provides critical habitat for endangered species like the Florida scrub-jay and gopher tortoise. Fire kills the tree but releases seeds for regeneration.

Uses

Ecological restoration, native plant collections, specialty conifer gardens. Not commonly used in ornamental horticulture due to irregular form and fire association. Wood used for pulp and fuel.