Weeping Japanese maples, the cascading laceleaf types sold as Acer palmatum Dissectum cultivars, are easy to grow once they are in the right spot. Give them morning sun and afternoon shade, soil that drains well but never dries out completely, shelter from hot drying wind, and a light hand with the pruners. Most problems with laceleaf maples come from a few predictable mistakes: planting too deep, siting them in harsh afternoon sun, overwatering in heavy clay, or pruning them like a shrub. This guide focuses specifically on the weeping dissectum forms, including how to stake them for height and how to thin the mound without ruining the waterfall shape.
Part of our Trees & Shrubs guide →
In this guide
- What Makes a Weeping Japanese Maple Different
- Popular Weeping Cultivars
- Choosing the Right Spot
- Planting a Laceleaf Japanese Maple
- Staking a Weeping Maple for Height
- Watering and Feeding
- Pruning a Weeping Japanese Maple
- Growing a Weeping Maple in a Container
- Common Problems and Fixes
- Frequently Asked Questions
Key Takeaways
- Most weeping laceleaf cultivars grow in USDA zones 5–8; some red forms handle zone 9 with shade.
- Site in morning sun and afternoon shade; fine-cut leaves scorch in hot afternoon sun and wind.
- Plant with the root flare at or slightly above grade, in well-drained soil.
- Stake a young leader upright if you want a taller tree; weepers only gain height from the graft or a trained stem.
- Prune lightly in late winter to thin interior twigs and dead wood, never shear the outside.
What Makes a Weeping Japanese Maple Different
The weeping forms belong to the Dissectum group of Japanese maples. Their leaves are cut into thin, lacy, feather-like lobes, which is why they are also called laceleaf or threadleaf maples. Branches arch out and down instead of up, forming a mound that is usually wider than it is tall. Most nursery plants are grafted onto an upright rootstock, so the height you buy is close to the height the tree keeps; the cascading top adds width far faster than height. Typical mature size is about 4 to 10 feet tall and 6 to 12 feet wide over many years, depending on cultivar and training.
Those fine leaves are the trade-off. They lose water faster than the broader leaves of upright maples such as Bloodgood, so laceleafs are more sensitive to afternoon sun, wind and drought. For care that applies to Japanese maples in general, including upright forms, see our how to grow a Japanese maple guide; this article concentrates on what is specific to the weeping types.
Popular Weeping Cultivars
| Cultivar | Leaf color | Typical size (10–15 years) | Notes |
|---|---|---|---|
| Crimson Queen | Deep red-purple, holds color well in summer | About 6–8 ft tall, 8–10 ft wide | Among the most widely sold; good color retention |
| Tamukeyama | Dark purple-red | About 6–10 ft tall and wide | Reputation for better sun tolerance than many red dissectums |
| Inaba Shidare | Purple-red, slightly larger leaves | About 5–8 ft tall, 8–10 ft wide | Vigorous and sturdy |
| Garnet | Orange-red to garnet | About 6–9 ft tall and wide | Vigorous, bright fall color |
| Viridis | Bright green, gold to red in fall | About 6–8 ft tall, 8–10 ft wide | Green leaves are the most heat tolerant of the group |
| Waterfall | Green, golden fall color | About 6–8 ft tall, 8–10 ft wide | Strong cascading habit |
| Red Dragon | Deep burgundy | About 4–6 ft tall and wide | Compact; good for small gardens and containers |
Sizes vary with climate, pruning and how high the graft sits. For more cultivar options, including upright and coral bark forms, see our list of Japanese maple varieties.
Choosing the Right Spot
- Light: Morning sun and afternoon shade is ideal in most of the country. In the cooler North and the Pacific Northwest, red laceleafs can take more sun. In zones 8–9, give dappled or afternoon shade without exception.
- Wind: Avoid corners and open lawns where wind funnels through; wind dries lacy leaves and browns edges. A spot near a wall, fence or larger shrubs helps.
- Space: Allow for width. A plant that looks tidy at 3 feet across can spread to 8 or 10 feet. Keep it 4 to 5 feet from walkways so it can cascade without being cut back.
- Heat: Avoid reflected heat from south- or west-facing walls, driveways and pavement.
- Showcase: Weepers look best where you can see the branch structure in winter: near an entry, at the edge of a patio, over rocks or beside water.
Planting a Laceleaf Japanese Maple
Plant in early fall or spring, when the tree is dormant or just leafing out and temperatures are mild. Fall planting gives roots time to settle before summer stress in most zones.
- Test drainage. Dig a hole about 12 inches deep, fill it with water, and let it drain. If it is still holding water after several hours, plant on a slight mound or in a raised bed.
- Dig wide, not deep. Make the hole two to three times as wide as the root ball and no deeper than the root ball’s height.
- Find the root flare. Remove excess potting mix from the top of the root ball until you find where roots spread from the trunk. Set the tree so that flare sits at or an inch above grade.
- Loosen circling roots. Container trees often have roots circling the pot. Tease them out or make a few shallow vertical cuts.
- Backfill with native soil. Mixing a little compost into the backfill is fine, but heavily amended holes in clay act like a bathtub and hold water.
- Water thoroughly and add 2 to 3 inches of shredded bark mulch over the root zone, keeping it a few inches away from the trunk.
Planting too deep is one of the most common causes of slow decline in Japanese maples. If your tree has struggled for a few years with thinning leaves and twig dieback, our guide on why a Japanese maple is dying walks through the checks.
Staking a Weeping Maple for Height
Because dissectum branches grow outward and down, a laceleaf grafted low on its rootstock will stay low, often under 3 or 4 feet, for many years. If you want a taller, more tree-like weeper, train a leader upward while the plant is young.
- Choose one strong, flexible branch near the top of the plant.
- Drive a sturdy bamboo or metal stake into the soil next to the trunk, taking care to avoid major roots.
- Gently bend the chosen branch upward and tie it loosely to the stake with soft plant tie or tree tape every 8 to 12 inches. Never use wire.
- As it grows through the season, keep tying the new growth upward.
- Once the trained leader has reached the height you want and firmed up, often after two to three years, remove the stake. The new top will cascade from that higher point.
Check ties every few months so they do not girdle the bark as the branch thickens. Newly planted trees in windy sites may also benefit from a short, loose stake for the first year to keep the root ball from rocking.
Watering and Feeding
For the first two growing seasons, water deeply about once or twice a week when there is no rain, soaking the root zone rather than sprinkling. Established trees need water during dry spells, particularly in summer heat. The goal is soil that is evenly moist a few inches down but never soggy. Check with your finger before watering; in clay, overwatering is as harmful as drought.
Laceleaf maples need little fertilizer. Heavy feeding forces soft, rapid growth that scorches easily and can lead to dieback. In poor soil, a light spring application of a slow-release fertilizer for trees and shrubs, or a top-dressing of compost, is plenty. Skip fertilizer for the first year after planting and avoid feeding after midsummer.
Pruning a Weeping Japanese Maple
Pruning a laceleaf is about revealing structure, not controlling size. Shearing the outside into a dome creates a dense shell of twigs and ruins the cascading look. Instead, work from the inside out.
- When: Late winter, while dormant and before buds break, when branch structure is easy to see. Light corrective cuts can be made in early summer after leaves harden.
- Dead and crossing wood: Remove dead twigs, branches that cross or rub, and inward-growing shoots that clutter the center.
- Thinning: Open the interior enough that you can see some of the trunk and main branches. This improves airflow and shows off the layered branching.
- Branches touching the ground: Trim branch tips back to an outward-facing bud so the skirt stays an inch or more above the mulch.
- Rootstock suckers: Remove any shoots growing from below the graft. They will have larger, non-lacy leaves and will outgrow the weeping top if left.
- Amount: Remove no more than about 15 to 20 percent of live growth in one year.
Use sharp bypass pruners and a small pruning saw, and make cuts just outside the branch collar. For step-by-step technique that applies to all Japanese maples, see how to prune a Japanese maple.
Growing a Weeping Maple in a Container
Compact laceleaf cultivars make excellent patio specimens. Use a container at least a few inches wider than the root ball with drainage holes and a bark-based potting mix. Water when the top inch or two is dry. Repot or root prune every two to three years. In zones 6 and colder, roots in pots are far more exposed to cold than in the ground, so move containers into an unheated garage or bury them in a protected spot over winter.
Common Problems and Fixes
- Brown, crispy leaf edges in summer: Leaf scorch from sun, heat, wind or drought. Water deeply, mulch, and provide afternoon shade. Damaged leaves will not recover, but next year’s growth will be fine if conditions improve.
- Red leaves turning green or bronze in summer: Normal in some cultivars, especially in heat or shade. Varieties like Crimson Queen and Tamukeyama hold color better.
- Sudden wilting of one branch: Can indicate verticillium wilt, a soil-borne fungus. Prune the affected branch back to healthy wood and disinfect tools.
- Late frost damage: Tender new leaves can blacken after a late spring frost. Cover small trees with frost cloth on cold nights; damaged trees usually releaf.
- Aphids or scale: Hose off aphids; treat scale with horticultural oil during dormancy as directed on the label.
For care of other trees and shrubs in your landscape, see our trees and shrubs guide.
Frequently Asked Questions
How fast does a weeping Japanese maple grow?
Slowly. Most laceleaf cultivars grow roughly 6 to 12 inches a year, mostly in width. Height depends largely on the height of the graft and whether you train a leader upward with a stake.
Can a weeping Japanese maple take full sun?
In cooler northern climates some red cultivars, notably Tamukeyama, tolerate full sun if well watered. In most of the US, and especially in zones 7 to 9, afternoon shade prevents leaf scorch.
How do I make my weeping Japanese maple taller?
Stake a young, flexible branch upright and tie it as it grows. After two to three years, once it has firmed up at the desired height, remove the stake and the branch will cascade from the higher point.
When should I prune a Crimson Queen Japanese maple?
In late winter while it is dormant, when you can see the branch structure. Thin dead, crossing and inward-growing branches from the inside, and avoid shearing the outer surface.
Why are the leaves on my laceleaf maple turning brown?
Most often it is leaf scorch caused by afternoon sun, hot wind or dry soil. Water deeply during dry spells, mulch the root zone and provide afternoon shade. If browning is sudden and limited to one branch, check for verticillium wilt.