Evergreen Tree
Green Giant Arborvitae
Thuja
Traits
Varieties We Carry
Green GiantThuja
Sizes & Pricing
3 galFrom$19.95
7 galFrom$49.95
15 galFrom$125.00
Fresh this week. Last restocked May 11.
LightFull Sun
WaterModerate
Mature size30-50 feet × 12-20 feet
About Green Giant Arborvitae
Green Giant Arborvitae (Thuja plicata x standishii) is a fast-growing evergreen hybrid conifer forming a dense, broadly pyramidal column of rich green, scale-like foliage. It is widely planted as a privacy screen, windbreak, and specimen tree, maintaining its color year-round with minimal maintenance. Starting at $19.95.
Plant details
- Bloom Season
- Non-flowering
- Flower Color
- Non-flowering
- Growth Rate
- Fast
- Foliage
- Evergreen
- Soil
- Loam, Clay, Acidic, Well-drained
Best planting months
Recommended forZone 9b · St. Augustine, FL
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This monthGood windowOther months
Seasonal care
Good planting window.
Active growing season.
Ideal planting window.
Retains foliage through winter.
Care essentials
Light
Plant in full sun for maximum density and vigor; good air circulation in NE Florida's humid climate is important to prevent foliage diseases. Avoid dense shade, which produces thin, open growth.
Water
Water deeply and regularly through the establishment year; once established, supplemental irrigation is needed during dry periods. Ensure excellent drainage — this hybrid does not tolerate waterlogged soil. In NE Florida Zone 9b summers, consistent soil moisture with dry intervals is key to success.
Soil & Fertilizer
Prefers moist, well-drained, slightly acidic loam or clay-loam soil. In NE Florida's sandy sites, amend with compost and maintain a 2–3 inch mulch layer to conserve moisture. Apply a balanced slow-release fertilizer in early spring; avoid late-season applications.
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Common questions
Is Green Giant Arborvitae a good plant for St. Augustine?
Green Giant Arborvitae is a evergreen tree for Zone 9b coastal Florida gardens, reaching 30-50 feet × 12-20 feet.
Care information verified from
Last reviewed February 2026. Our care guidance comes from trusted horticulture sources and decades of helping St. Augustine gardeners. Conditions here can vary dramatically from one area to the next, so come ask us and we'll tailor it to your yard.