California fuchsia

Epilobium canum. Family Onagraceae. Perennial.

Also called Hummingbird trumpet, Zauschneria.

California fuchsia is a spreading, woody-based perennial native to western North America, grown for its grey-green foliage and scarlet tubular flowers in late summer and autumn. It suits sunny, dry gardens and provides valuable late-season nectar for hummingbirds where they occur; despite its common name, it is not a true fuchsia.

Hardiness

USDA zones 8a to 10b

UK hardiness: H4 (hardy, -5 to -10°C)

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Grows outdoors in the shaded zones. Select a zone to see what else grows there.

California fuchsia
Photo: Steve Matson
California fuchsia
Photo: Grant Chovil
California fuchsia
Photo: Grant Chovil

At a glance

Sun
Full sun; tolerates light afternoon shade in very hot inland gardens, but flowers less in shade.
Water
Low once established. Water regularly during establishment, then deeply but infrequently during prolonged dry weather; avoid persistently wet soil.
Soil
Well-drained sandy, gravelly or loamy soil. Tolerates poor soil, but struggles in wet clay and winter waterlogging.
Height
1-3 ft (0.3-0.9 m)
Spread
2-4 ft (0.6-1.2 m), potentially wider through underground stems
Flowers
Late summer through autumn; usually scarlet to orange-red tubular flowers.
Foliage
Small, narrow, grey-green to silvery leaves, often softly hairy. Usually loses its leaves in cold winters; may remain partly evergreen in mild climates.
Growth
Moderate to fast once established
Care needed
Low

The year at a glance

  • Pollinators
  • Deer resistant
  • Drought tolerant
  • Heat tolerant
  • Wildlife
  • Low allergen
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Flowers
Plant

Northern hemisphere months. In Australia, shift them by six.

Difficulty
Moderate
Toughness
Fairly tough

Will it suit your garden?

Pick your zone, country, light and whether you have pets.

Full sun is 6 or more hours of direct sun a day, part shade 3 to 6 hours, shade under 3.

How it grows

  1. Planting day

    1 ft (0.3 m)

  2. After 1 year

    1.4 ft (0.42 m)

  3. After 2 years

    1.8 ft (0.55 m)

  4. After 3 years

    2 ft (0.6 m)

    full size

About 2 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Good to know

Cats and dogs
Safe
Native to
the US
In the garden
Spreads vigorously: plan to contain it.
Growth rate
Fast

Care

Jobs through the year

WaterApr–May, Oct, every 21 days
Water established plants only when dry; newly planted clumps need more frequent checks.
WaterJun–Sep, every 21 days
During prolonged drought, soak deeply and let soil dry between waterings.
PruneMar–Apr
Cut old stems to 5–10 cm before strong new growth; leave stems standing through winter.
PruneAug–Sep
Dig out encroaching shoots with their underground stems to contain spread.
ProtectJan–Mar, Oct–Dec
Not reliably hardy in zones 6–7; overwinter a backup plant frost-free and keep outdoor crowns dry.
  • Water new plants deeply whenever the root zone begins to dry during their first growing season.
  • Once established, allow the soil to dry between waterings; occasional deep summer watering can extend flowering.
  • Avoid routine feeding, especially high-nitrogen fertiliser, which encourages loose growth.
  • Use a thin gravel mulch where useful, keeping the crown clear of damp organic mulch.
  • Lift unwanted shoots with their underground stems to keep the clump within bounds.

Pruning. Cut old stems back to about 2-4 in (5-10 cm) in late winter or early spring, before strong new growth starts. In colder gardens, leave the old stems standing through winter and remove any frost-damaged growth in spring.

Through the year

Late winter
In mild areas, cut back old stems before new growth begins.
Spring
Plant after severe frost risk has passed, choosing full sun and freely draining soil.
Late spring
Take softwood cuttings from healthy, non-flowering shoots.
Summer
Water young plants as needed; give established plants an occasional deep soak during prolonged drought.
Late summer
Remove shoots spreading into neighbouring plants and enjoy the start of flowering.
Autumn
Keep fallen leaves from collecting over the crown and check that winter rain can drain away.

In the garden

  • Plant along sunny gravel paths, allowing the flowering stems to soften the edges.
  • Let it spill over a low retaining wall where its tubular flowers can be seen clearly.
  • Combine with silver-leaved shrubs and drought-tolerant grasses for a dry border with late-season colour.
  • Use in a California native planting to provide autumn nectar after many spring-flowering plants have finished.

Garden styles it suits: California native, Mediterranean, Desert / xeriscape, Dry gravel garden, Wildlife garden and Hot border.

Plant it with: California buckwheat, Cleveland sage, Deer grass, Yarrow, Lavender and Rockrose.

Wildlife: The flowers are especially attractive to hummingbirds in North America. Bees also visit, sometimes reaching nectar through holes near the flower bases.

Problems to watch for

  • Root and crown rot in wet soil: improve drainage, reduce watering and move plants out of winter-wet sites.
  • Sparse flowering or floppy stems: provide more sun, stop nitrogen feeding and reduce excessive watering.
  • Unwanted spreading by underground stems: lift out encroaching shoots with their roots, or give the plant a contained planting area.
  • Frost damage: leave old stems through winter, then cut back to healthy growth in spring; protect young plants during unusually severe cold.

Safety

Not known to be toxic to people, cats, dogs or horses. Species-specific safety information is limited, so do not treat it as edible or encourage pets or livestock to eat it.

Where it spreads. Can spread assertively by underground stems in California gardens and other mild, dry-summer regions, particularly with irrigation. This is usually a garden-containment issue rather than an invasive-species listing.

Easily confused with

  • Hardy fuchsia (Fuchsia magellanica)

    A woody shrub with hanging flowers that usually have red sepals and a contrasting purple inner skirt; California fuchsia has narrow trumpet-shaped flowers and often grey, hairy foliage.

  • Fireweed (Chamaenerion angustifolium)

    Usually much taller, with upright spikes of open, four-petalled pink-purple flowers rather than narrow scarlet tubes.

The name

The species name canum means grey or hoary, referring to the hairy foliage, while California fuchsia describes its familiar range and superficial resemblance to true fuchsias.

Propagation. Take softwood cuttings in late spring or early summer, or divide rooted shoots in spring. Seed can also be sown, but seedlings may differ from the parent; use cuttings or division to preserve a named cultivar.

Checked against open data

Accepted botanical name
Epilobium canum
In the US and Canada
Native in the lower 48 states.
Native range
Arizona, California, Idaho, Mexico Northeast, Mexico Northwest, Nevada, New Mexico, Oregon, Utah and Wyoming.

Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.

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