Norway Spruce
Picea abiesUSDA | Grow Zone
3-7Outdoors all year in zones 3 to 7. Anywhere colder, keep it as a houseplant.
- Light
- Full sun, 6-8 hours
- Water
- Deeply but infrequently
- Humidity
- Moderate humidity
- Temperature
- 60-75°F (15-24°C)
- Difficulty
- Intermediate
- Growth
- Moderate
- Mature size
- 40-60 ft tall
The Norway Spruce, or Picea abies, is a majestic evergreen tree native to Europe, known for its tall stature and dense foliage. It is favored for landscaping and timber production, providing beauty and shade in gardens.
Ask Vesper about Norway Spruce
Ideal temperature
60-75°F is where it grows fastest.
Spacing and harvest
- Mature size
- 40-60 ft tall
- Plant apart
- 240-360 in
- Frost
- Hardy: survives frost
Everything it needs
9 essentials at a glance
Watering
Norway Spruce prefers well-drained soil and should be watered deeply but infrequently.
During the growing season, water every 1-2 weeks, allowing the top 1-2 inches of soil to dry out between waterings. In winter, reduce watering significantly, only watering if the soil is extremely dry. Signs of over-watering include yellowing needles and root rot, while under-watering may cause needle drop and browning tips.
Light
This tree thrives in full sun, requiring at least 6-8 hours of direct sunlight daily.
Ideal placement includes open areas where it can receive ample light without obstruction. It can tolerate partial shade but may exhibit slower growth in such conditions.
Soil
Norway Spruce prefers slightly acidic to neutral soil, with a pH range of 5.5 to 7.0.
The soil should be well-draining to prevent waterlogging, and a mix of loamy soil with sand or perlite is recommended for optimal drainage and aeration.
Humidity
This tree is adaptable to various humidity levels but prefers moderate humidity.
To increase humidity, consider misting the needles or placing a humidity tray nearby. Signs of humidity stress include browning needle tips and excessive needle drop.
Temperature
Norway Spruce thrives in cooler climates, with an ideal temperature range of 60-75°F (15-24°C).
It is hardy in USDA zones 3-7, tolerating cold temperatures down to -40°F (-40°C) and is moderately heat tolerant, though prolonged high temperatures can stress the tree.
Fertilizing
Use a balanced fertilizer with an NPK ratio of 10-10-10 or similar, applying in early spring as new growth begins.
Fertilize every 4-6 weeks during the growing season, tapering off in late summer. Signs of nutrient deficiency include yellowing needles and stunted growth.
Pruning
Prune Norway Spruce in late winter or early spring before new growth begins.
Use sharp, clean pruning shears to remove dead or damaged branches and to shape the tree. Light pruning can help maintain its form, while heavy pruning should be avoided as it can stress the tree.
Repotting
Norway Spruce is typically grown in the ground but can be repotted if grown in containers.
Repot every 2-3 years or when root-bound, using a pot that is 1-2 inches larger in diameter. Signs it needs repotting include roots growing out of the drainage holes and stunted growth. Carefully remove the tree from its pot, trim any circling roots, and place it in fresh soil.
Propagation
Propagation is typically done through seeds or cuttings.
For seeds, collect them in late summer and stratify them for 30 days before sowing in spring. For cuttings, take 4-6 inch stem cuttings in late spring, dip them in rooting hormone, and plant in a well-draining mix. Keep the cuttings moist and in indirect light until roots develop.
When it's unhappy
Yellowing needles
Why it happens
Often caused by over-watering or nutrient deficiency.
How to fix it
Adjust watering schedule and consider fertilizing if nutrient deficiency is suspected.
Needle drop
Why it happens
Can result from environmental stress, such as drought or improper watering.
How to fix it
Ensure consistent watering and monitor for signs of stress, adjusting care as needed.
Browning needle tips
Why it happens
Typically indicates low humidity or underwatering.
How to fix it
Increase humidity around the tree and ensure regular watering.
Root rot
Why it happens
Caused by poor drainage and over-watering.
How to fix it
Improve drainage and reduce watering frequency. If severe, consider repotting.
Pests (e.g., spider mites, aphids)
Why it happens
Pests can infest the tree, especially in dry conditions.
How to fix it
Inspect regularly and treat with insecticidal soap or neem oil as necessary.
Care through the year
Spring
In spring, begin fertilizing as new growth appears and ensure consistent watering as temperatures rise. Prune any dead or damaged branches.
Summer
During summer, maintain regular watering, especially during dry spells. Monitor for pests and adjust care as needed to prevent stress.
Fall
In fall, reduce watering as temperatures cool and prepare the tree for winter. Mulch around the base to protect roots from freezing.
Winter
In winter, limit watering to only when the soil is extremely dry. Protect the tree from harsh winds and consider wrapping the trunk for added insulation.
Toxicity & Safety
Norway Spruce is generally non-toxic to pets and children. However, ingestion of large quantities of needles may cause mild gastrointestinal upset. Symptoms include vomiting or diarrhea.
Good to know
How often should I water my Norway Spruce?
Water your Norway Spruce every 1-2 weeks during the growing season, allowing the top 1-2 inches of soil to dry out between waterings.
Why are my Norway Spruce leaves turning yellow?
Yellowing needles can indicate over-watering or a nutrient deficiency. Adjust your watering schedule and consider fertilizing if necessary.
What soil is best for Norway Spruce?
Norway Spruce prefers slightly acidic to neutral soil, with a pH range of 5.5 to 7.0, and well-draining soil to prevent waterlogging.
When is the best time to prune Norway Spruce?
The best time to prune Norway Spruce is in late winter or early spring before new growth begins, to maintain its shape and remove any dead branches.
What are the signs of root rot in Norway Spruce?
Signs of root rot include yellowing needles, stunted growth, and a foul smell from the soil. Ensure proper drainage and adjust watering to prevent this issue.
Can Norway Spruce tolerate heat?
Norway Spruce is moderately heat tolerant but prefers cooler climates. Prolonged high temperatures can stress the tree, so ensure adequate watering during hot spells.
How do I propagate Norway Spruce?
Norway Spruce can be propagated from seeds or cuttings. Collect seeds in late summer, stratify for 30 days, or take stem cuttings in late spring and root them in a well-draining mix.
Track this plant in your garden.
Set care reminders, log growth, and join a community of plant lovers.