Trees

Pinus strobus 'Sea Urchin'

Sea Urchin eastern white pine

Sea Urchin eastern white pine. Photo: MeganEHansen / Flickr, CC BY-SA 2.0

Sea Urchin forms a tiny rounded mound of soft blue-green needles. Its slow growth and finely textured crown make it useful in troughs, containers and rock gardens where larger pines would quickly outgrow their setting. Periodically clearing fallen needles from the dense interior helps keep this miniature specimen clean and accessible to inspection.

At a glance

Sun: Full sun
Size: Height: 2 ft, supplier garden size, not ultimate size · Width: 2 ft, supplier garden size
Water: Moist, well-drained soil
Hardiness: USDA zone 3 minimum

Sizes & prices

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Catalog updated September 8, 2026. This is not a live stock count; please call to confirm availability and price.

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Landscape use & tree form

Form: Small rounded mound
Growth rate: 1–3 inches/year (grower estimate)
Use: Rock garden; trough or container

Resistance & tolerances

Deer: The parent species is listed as deer resistant, but young plants may still be browsed.
Drought: Tolerates occasional dryness; maintain moisture through extended dry periods, especially for dwarf or container plants.
Wet soil: Prefers moist, well-drained soil.

Resistance is not a guarantee; deer and rabbits may browse any plant.

Pollinators & wildlife

Caterpillar host: Moths
Birds: Seeds provide food
Evidence: Species-level guidance; cultivar habitat value varies.

Native range

Native range / parentage: Cultivar of a species native to Central and eastern Canada and the United States. Cultivated selection of a Kentucky-native species; not wild local stock.
Tristate native status: Cultivated selection of a Kentucky-native species; not wild local stock.

Seasonal interest

Foliage: Evergreen; soft blue-green needles

Growing & care

Maintenance: Remove accumulated fallen interior needles annually.
Pruning: Little routine pruning is needed. For a denser outline, shorten soft new candles before they harden in early summer; do not cut back into bare, needleless wood.
Soil: Acidic, moist, well-drained loam or sand.
Issues: Avoid salt, air pollution and alkaline soil. White-pine blister rust, white-pine weevil and wind damage are potential problems.

Sources & photo credits

Iseli Nursery

NC State Extension

University of Minnesota Extension

www.udel.edu

www.environment.fhwa.dot.gov

Photo: MeganEHansen / Flickr, CC BY-SA 2.0; resized for web. · CC BY-SA 2.0

Image notes: Sea Urchin eastern white pine. Photo: MeganEHansen / Flickr, CC BY-SA 2.0; resized for web.

Reviewed September 22, 2026. Growing conditions vary by location.