Ilex verticillata
Winterberry, Black alder, Fever bush, Michigan holly
- Height × spread
- 3m × 3m
- Position
- Full sun
- Hardiness
- Very cold to -20C (RHS H6)
- Flowers
- Autumn
Availability
Please ask in store about availability
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
This is a deciduous holly that has no prickles. It makes a dense foliaged, bell shaped, bush that will increase its spread by sending out suckers. The leaves are long and slim, with finely toothed edges and downy on their under side. There are male and female forms, pollinated females produce clusters of berries which usually last into winter, beyond leaf fall; attractive on the otherwise bare branches. They often last till the turn of the year before being eaten by birds. This holly is used as a hedging plant though suckers may need to be removed to constrain its width. It has the added merit of being happy in very moist soil, where its root nodules will add nitrogen, whilst the shrub itself helps to drain the moisture. This can reach around 3m (10ft) height and spread.
- Foliage colour
- Green
- Autumn foliage
- Yellow
- Stem colour
- Grey
- Fruit colour
- Red
- Variegated
- No
- Scent
- No
- Shape
- Oval
- Height
- 3m
- Spread
- 3m
- Height in 10 years
- 2m
- Spread in 10 years
- 2m
- Season of interest
- Spring, Autumn, Winter
- Flowers in
- Autumn
- Evergreen
- Deciduous
- Garden style
- Winter garden, Seaside garden
- Sun or shade
- Likes full sun, tolerates part shade, tolerates light shade
- Soil type
- Clay, Loam (normal), Sandy soil
- Soil pH
- Acid (ericaceous)
- Drainage
- Moisture retentive soil, Damp and wet soil
- Hardiness
- Very cold to -20C (RHS H6)
- Borders & containers
- Borders
- Use for
- Hedge, Architectural, Bird attraction
- Maintenance
- Easycare – low/no maintenance
- Hazards
- No
Spring
Spring · Outdoors
Apply acidic mulch
Where soil is only just acidic, apply mulch with a high acidic content such as leaf mould, or mulch for ericaceous plants. Alternatively the plant can benefit from a feed of iron supplement (iron chelate) such as sequestrol.
Spring - late · Outdoors
Feed young plants with slow release fertiliser
Spread a slow release fertiliser around the base of the plant to the edge of the foliage spread, so that it can feed the roots. It is helpful for this to be applied for several years.
This is a simple way to provide a nutrient boost until the plant becomes well established.
Spring-Autumn · Outdoors
Water to keep the soil moist
For best results, this plant needs soil that is always moist. Water deeply and regularly as soon as soil appears dry. Even for established plants in the ground, a dry week can cause problems with some soils. Check plants in pots more often, especially in hot weather. Or install an automatic irrigation system which will do the hard work for you, even when you are away on holiday.
Without regular watering some plants never fully regain their beauty.
Planting & general
Outdoors
Water with rain water
This plant needs rain water or soft water (the minerals in alkaline or "hard" water are harmful). This is especially important for plants in pots.
Outdoor planting · Planting
Add root growth stimulant to the planting hole
Mycorrhizal fungi helps roots establish quickly, so they absorb water and nutrients more efficiently. It comes as a powder, granule or gel. Add to the planting hole or container, and to the plant's rootball before planting in the hole. For "bareroot" plants use a gel.
Hedges · Planting
Suitable for wet ground
This hedge will tolerate wet or swampy ground.
Hedges · Planting
Hazardous to animals
Don't plant this hedge on a boundary, or any position where it could be eaten by animals grazing in meadows, or otherwise left its vicinity. Some parts of the plant are poisonous.
Planting
Protect & support young trees
Attach a newly planted tree or tall shrub over 1m to a tree stake to give support and prevent windrock. Use a tree guard to stop tree bark being eaten by animals, especially in areas with deer - removing bark injures a tree and in worst case can kill it.
Compost · Planting
Ericaceous compost
This plant requires acidic (ericaceous) soil. Where the soil is not acidic, or when planting in pots, use an ericaceous compost.
Found in
More Ilex
Ilex
Holly
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Ilex aquifolium 'J.C. Van Tol'
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Ilex aquifolium 'Silver Queen'
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