Growth Rate
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- Speed: Slow to moderate; grows about 6 to 12 inches per year under optimal conditions.
- Mature Height: Can reach heights of 15 to 20 feet.
- Mature Spread: Generally maintains a narrow spread of 3 to 4 feet.
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Colorful leaves
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Flowering
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No |
Disease resistant
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No |
Cold Tolerant
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Yes |
Heat Tolerant
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No |
Drought Tolerant
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No |
Deer Resistant
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No |
Edible
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No |
Wildlife Attraction
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Attracts various birds and beneficial insects, providing habitat and food sources throughout the seasons. |
Self-pollinating
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Seasonality
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- Season of Interest: Year-round
- Winter Interest: Maintains its vibrant green color throughout the winter, providing a lush backdrop against frosty landscapes.
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Ideal For
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- Tall Privacy Screens – Perfect for narrow spaces where height is needed without width
- Formal Gardens – Excellent as living pillars in symmetrical or structured designs
- Entryway or Driveway Framing – Adds elegance when planted in pairs or rows
- Windbreaks – Serves as a tall, narrow wind barrier in exposed areas
- Year-Round Structure – Provides vertical interest and evergreen presence throughout all seasons
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Leaf Description
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- Leaves: Scale-like, bright green foliage that is dense and aromatic.
- Texture: Soft and feathery to the touch, contributing to its lush appearance.
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Flower Description
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- Flowering Period: This cultivar is primarily ornamental and does not produce significant flowers.
- Flower Description: As a conifer, it produces small cones instead of traditional flowers.
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Planting Instructions
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- Best Time to Plant: Spring or early fall, when temperatures are milder.
- Planting Method: Dig a hole twice as wide as the root ball and the same depth. Place the plant in the hole, backfill with soil, and water thoroughly.
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Pruning & Maintenance
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Minimal pruning is necessary. Light shaping can be done in late winter or early spring to maintain its columnar form. |
Water Needs
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Requires regular watering during the first year to establish roots. Once established, it needs moderate watering, particularly during dry periods. |
Light Needs
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Prefers full sun, thriving with at least 6 to 8 hours of direct sunlight daily. |
Harvesting
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While Thuja occidentalis ‘DeGroot’s Spire’ is not a plant typically “harvested” in the traditional sense (like fruit or flowers), it does have value for ornamental harvesting, especially for seasonal decor and landscape maintenance. |
Fertilizing
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Fertilize in early spring with a balanced fertilizer to promote healthy growth. |
Additional Care Tips
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- Pest and Disease Resistance: Generally resistant to pests and diseases, making it a low-maintenance choice.
- Mulching: Apply mulch around the base to retain moisture and suppress weeds.
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Pollination
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Wind-pollinated; does not require animal pollinators. |
Companion Plants
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🌸 Flowering Shrubs & Perennials:- Hydrangea paniculata ‘Limelight’ – Bold white blooms contrast well with vertical greens
- Echinacea purpurea (Coneflower) – Adds purple color and upright flower spikes
- Astilbe ‘Vision in Red’ – Great texture and color for nearby shady spots
🌾 Ornamental Grasses & Groundcovers:- Festuca glauca ‘Elijah Blue’ – Cool-toned clumping grass for color contrast
- Carex morrowii ‘Ice Dance’ – Variegated sedge for edges or underplanting
- Liriope muscari – Grass-like with lavender blooms, ideal at the base
🌳 Evergreens & Structural Companions:- Buxus (Boxwood) – Rounded form balances Thuja’s vertical lines
- Ilex crenata (Japanese Holly) – Glossy green foliage and formal appearance
- Spiraea ‘Goldmound’ – Bright gold leaves and soft blooms offer seasonal interest
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