Growing zones
See Zone Map >Status: In stock
- Sun
Mature Plant Size (H x W):
30-40' x 25-35' 
Bloom Season:
Spring
- Attracts Birds
- Walnut Toxicity Resistant
Planting & Care for Trees – Royal Red Norway Maple Tree
Preparation
- The Royal Red Maple (Crimson King) maple tree is the classic purple-leafed maple tree.
- It's a slow growing shade tree, but has a dense, broad oval form.
- This maple tree is extremely hardy.
- This maple tree does need well-drained soil.
- One of the more popular Norway maple tree types.
- Mature size is around 30-40' tall x 35' wide.
- Hardiness zone 4.
- It is highly tolerant of urban pollution and will even thrive in inner city environments.
- Easily grown in average, medium moisture, well-drained soil in full sun to part shade. Best in full sun.
- Norway maple has high tolerance to pollution and is adaptable to many soils including clay, sand or acidic conditions.
- Adding a 3-inch layer of mulch helps the soil retain moisture and inhibits the growth of weeds. Pull the mulch back a few inches from the trunk to prevent rot.
Opening Plant Material
- Grow Bags - Remove bag by using a utility knife to slit up the side and peel off the fabric exposing the soil and roots. Plant the root ball just like you would a container plant. No trimming of roots is necessary for grow bags.
- Each type of plant has an illustration on how to plant if you scroll down and click on the orange rectangular box “Handling & Plant Guidelines”.
Planting Grow Bags
- Plant grow bags in spring or fall.
- Notice where the base of the trunk flairs out from the tree. This is called the root flair. This root flair should show when the tree is planted. If necessary, add soil under the ball so the root flair is exposed.
- Place fertilizer packets into the bottom of the hole (if purchased). *Use Our Recommended Fertilizer.
- Backfill the hole with soil, making sure the top of the root ball is visible and slightly higher than the soil around it.
- Firm the soil around the plant. Water well to settle soil around the root ball.
Pruning - After Planting
- Grow Bags - Although it is not essential for grow bags to be pruned after planting, a light pruning for shape, to remove any broken branches from shipping, or to thin out a heavily branched plant will help in the transplanting process and in the appearance of your new planting.
Pruning - Through-out the Season
- Corrective pruning to remove dead, dying, and diseased branches should be done in winter.
- Prune branches that grow into the center or rub against each other. Remove smaller branches up to two inches in diameter first. Sugar maple makes dense shade; removal of some branches in the center will let in sun and air. Cut small branches just outside the "collar", the thick fold of bark at the junction of the branch and its lateral. Cutting "flush" to the main branch injures the collar and cutting too far out leaves a "stub", both lengthening the healing time for the tree.
Watering - After Planting
- Plants typically take approximately 6 weeks to establish new roots in your soil. During this period, water plants as often as every 2-4 days at the start and at least a minimum of once per week.
- Beyond the 6 week establishment period, water once per week, unless rains occur.
- Stick your finger into the soil around 3” to check soil moisture.
Watering - Through-out the Season
- After the first season, plants should only be watered during extended periods without rain.
- How do you know if your plants need water? The easiest way to tell is to touch the soil around the roots. If it is moist, there is no need to water. If it is dry, give it a good soaking with the hose end (no nozzle) watering the soil only, not the leaves.
- Stick your finger into the soil around 3” to check soil moisture.
Planting & Handling Help
Download our Planting and Handling Guide below to plan for a successful arrival and install of your plants. Be sure to water all plants as soon as they arrive and every day until you’re ready to plant. Keep any bare root bundles in a shady, cool spot with the roots covered at all times.
Learn More
Watch our videos on handling bare root plants, how your order is prepared for shipment and more.
Plant Sizing
What is the difference between Containers, Grow Bags, Bare Root, and Balled & Burlap (B&B)?
Shipping Times
Our FedEx and local shipping times depend on two factors, one is by the region and the second is the type of product being shipped. For example, small fruits are only shipped in spring, but majority of our perennials are shipped from spring until fall. Keep in mind the dates below act as a general guide. Due to unpredictable weather, staffing, inventory and industry demands these timelines can change. Therefore, we cannot guarantee any of these times.
Shipping Dates by Region*
Northern Cold Region: April 22nd - November 7th
Northern Region: April 15th - November 7th
Middle Region: April 1st - November 7th
Southern Region: March 15th - November 7th
Local Delivery (small radius from Waterloo, WI): April 22nd - November 7th
Shipping Dates by Season*
Spring Shipping: Region Start Date (above) - May
Fall Shipping: September - November
Due to unpredictable weather, these times may vary. Some varieties are exceptions due to heat and plant health reasons. Enter your shipping zip code at the top of this page and be sure to check the shipping information on each product before you add it to your cart. If the product is too large or restricted in your state, you will not be able to checkout with that item in your cart.