Pet Safe
moderate Care
alder
Alnus mayrii
Alder (Alnus mayrii) is an amazing species of tree which is native to the United States. Alder is a common shade tree in many areas. The leaves are a deep green and the branches are densely arranged. Alder grows very quickly and can reach heights of up to 50 feet. This tree is an especially useful species as it has a deep root system, making it more resistant to erosion, flooding, and drought. Additionally, alder provides an excellent habitat for wildlife. Its nuts are favored by squirrels and birds, which helps to further spread its lovely foliage. Alder is a beautiful species of tree and its amazing qualities make it a great addition to any landscape.
Sunlight
Partial Shade
Water Needs
medium
USDA Hardiness Zones
Zone 4Zone 5Zone 6Zone 7
Hardiness Map
Green areas show climates worldwide where this plant can grow.
Zone 4Zone 5Zone 6Zone 7
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Water Every
7-10 days
Sun Needs
partial-shade
Growth
Low
Care Level
Low
Season
Fall
Sep Oct Nov
Winter
Dec Jan Feb
Spring
Mar Apr May
Summer
Jun Jul Aug
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
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Starts Flowering
Starts Flowering
Starts Flowering
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Pruning Time
Flowering
How to Propagate
Cutting
Take 4-6" cuttings in spring, root in water or moist soil
Layering Propagation
Bend stem to soil surface, cover lightly, roots form in 4-6 weeks
Grafting Propagation
Join scion to rootstock, bind securely until healed
Division
Divide root ball in spring, replant sections immediately
Seed Propagation
Start seeds indoors 6-8 weeks before last frost date
Plant Characteristics
Drought Tolerant
Is This Plant Right for You?
Good For:
- •Forgetful waterers
- •Homes with pets
- •Low-maintenance gardens
Consider Carefully:
- •Indoor growing
Bloom Seasons
spring
Care Tips
Light Requirements
Enjoys dappled or limited direct sun—about 2–4 hours of morning or late afternoon light and protection during peak midday sun.
Watering
Keep soil consistently moist but not waterlogged. Water when top inch of soil is dry.
Best Planting Time
Plant in early spring or fall for best results. Blooms in spring.