Degroot's Spire Arborvitae

Degroot's Spire Arborvitae (Thuja occidentalis 'Degroot's Spire')

Planting

• Choose a location with full sun to partial shade (at least 4–6 hours of sunlight daily).
• Dig a hole twice as wide as the root ball and no deeper than the root ball's height.
• Place the top of the root ball level with or slightly above the surrounding soil.
• Backfill with the native soil and gently firm it to remove large air pockets.
• Apply 2–3 inches of mulch around the base, keeping mulch 2–3 inches away from the trunk.

Watering

• Water thoroughly immediately after planting until the entire root ball and surrounding soil are soaked.
• For the first 2 weeks, water every day or two if there is no significant rain.
• For the next 2–3 months, water deeply 2–3 times per week.
• After establishment (about one year), provide about 1 inch of water per week during dry periods.
• Deep watering is better than frequent light watering. Let the hose run slowly at the base so moisture reaches 8–12 inches deep.

Care

• Fertilize in early spring with a slow-release balanced tree and shrub fertilizer if needed.
• Prune only to remove dead or damaged branches or lightly shape. Avoid cutting into old, brown wood.
• No pollination is required since it is grown for its foliage, not fruit.
• Watch for bagworms and spider mites, especially during hot, dry weather.

Container Growing

Suitable only for a few years in a large container with excellent drainage. Water more frequently than in-ground plants, protect the roots from extreme winter cold, and plan to transplant it into the landscape as it matures.

Degroot's Spire Arborvitae FAQs

1. How big does Degroot's Spire Arborvitae get?

Degroot's Spire Arborvitae typically grows 15 to 20 feet tall and 4 to 5 feet wide at maturity. Its naturally narrow, upright shape makes it an excellent choice for tight planting spaces where you want height without taking up much room.

2. Can Degroot's Spire Arborvitae be used as a privacy screen?

Yes. Its dense evergreen foliage creates an attractive year-round privacy screen or windbreak when planted in a row. Space plants according to your desired coverage, and they'll grow together into a beautiful living wall while maintaining their narrow footprint.

3. Does Degroot's Spire Arborvitae need regular pruning?

Very little pruning is needed. Its naturally tidy, pyramidal form stays attractive with minimal maintenance. If you prefer a more formal appearance, it tolerates light shearing well to maintain a crisp, column-like shape.

4. Will Degroot's Spire Arborvitae keep its color in winter?

Yes. This evergreen provides year-round color, with rich green foliage that often develops a soft purple-bronze tint during the colder months. This seasonal color change is normal and adds extra interest to the winter landscape.

5. Can Degroot's Spire Arborvitae be grown in containers?

Yes, Degroot's Spire Arborvitae can be grown in large containers for several years, making it a great choice for flanking entryways, patios, or porches with year-round greenery. Choose a container with good drainage, water regularly, and be prepared to transplant it into the landscape as it matures and outgrows its pot.