Blue ash (Fraxinus quadrangulata)

Blue ash

Blue ash (Fraxinus quadrangulata) is a flowering plant species that is indigenous to the midwestern United States. Blue ash grows in moist valley soils and serves as an important food source for frogs.

Scientific classification

Species

Blue ash (Fraxinus quadrangulata)

Mints plantains olives and allies

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Perennial

Lifespan

Tree

Plant Type

Spring

Bloom Time

10 m to 25 m

Plant Height

1.8 m

Spread

Green, Blue, Yellow, Gold

Leaf Color

2.5 cm

Flower Size

Brown, Copper

Fruit Color

Spring

Growth Season

Moderate

Growth Rate

Images of Blue ash

Culture

Symbolism

Protection, Prosperity, Sea Rituals

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Quickly Identify Blue ash

New stems noticeably four-sided, aiding in quick identification.

Compound leaves with 5-11 leaflets, turning pale yellow in fall.

Tiny greenish or purplish flowers in dense panicles without petals.

Distinctive winged samaras in clusters, facilitating wind dispersal.

Robust trunk with squared appearance, gray bark with furrows and ridges.

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Care Guide for Blue ash

Every 1-2 weeks

Water

Full sun

Sunlight

5 - 32 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Originating from moderately moist regions, blue ash thrives with consistent, moderate hydration. Watering should occur every 1-2 weeks, adapting to the seasonal changes, with reduced needs during dormancy in colder months, showcasing resilience to short-term droughts.

Fertilize: Blue ash thrives with balanced nutrition from fertilizers. In spring, use a high-nitrogen mix, then switch to a balanced formula during summer and fall. Fertilize every 2-3 months with recommended amounts. Mulching and thorough watering post-application support nutrient absorption and moisture retention.

Pruning: Blue ash benefits from early spring pruning to remove dead or diseased branches, promoting airflow and growth. Light shaping enhances its structure and flowering, while preventing disease. Use sterilized tools to avoid contamination, as blue ash heals slowly and heavy pruning should be avoided.

Propagation: Blue ash is a resilient hardwood used in landscaping, noted for its foliage and autumn colors. Propagate by sowing pre-treated seeds in well-draining soil, maintaining moisture and partial shade for seedlings. With attention, blue ash will flourish in various green spaces.

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