Photo of Heracleum lanatum flower, foliage, form by Stephen Lea

Photo by Stephen Lea

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Heracleum lanatum

Also Known As

  • Heracleum maximum
  • Cow Parsnip
  • Indian Celery

Plant type

perennial, annual / biennial

size

  • H: 5'-6'
  • W: 5'-6'

planting zones

  • 3a-11

More Options

Heracleum lanatum plant details

Heracleum lanatum is a broadleaf deciduous annual / biennial or perennial with green foliage. In spring white flowers emerge. Attracts butterflies making it an excellent addition to pollinator gardens. Grows well with sun - bright shade and even moisture - low water. Does well in average and well-drained soil.

CHARACTERISTICS OF Heracleum lanatum

Plant type: annual / biennial or perennial
Plant family: apiaceae
Foliage: deciduous green
Mature size: 5 FT - 6 FT - wide, 5 FT - 6 FT - tall
Flowers: white blooms in spring
Uses: big leaves, fragrant, toxic

GROWING CONDITIONS for Heracleum lanatum

USDA Zones: 3a - 11
Sun exposure: sun - bright shade
Watering frequency: even moisture - low
Resistant to: deer
Soil needs: average and well-drained

Nursery contributed plant descriptions

A tall (4-10? tall) deciduous perennial. Cow parsnip has large leaves and can make a good accent plant for moist areas. Cut back as needed. Although plants may last only a few years, they will reseed themselves before they pass. Butterflies (including Anise Swallowtail and Lorquin's Admiral) and ladybugs love the flowers. Large white flowers with a sweet fragrance in the Spring. Native to California and is also found elsewhere in North America and beyond. Larval food source for anise swallowtail butterfly, Spring Azure, Pale Swallowtail, Lorquin's Admiral. Nectar source for hummingbirds and seed for bushtits, finches. The young stalks were used by Native Americans as a vegetable. Found in grows in wet areas, old meadows, woodlands, forest openings, grasslands, stream and river edges, and along roadsides. Communitites located in Yellow Pine/Red Fir/Lodgepole/Subalpine Forest, Foothill Woodland, Chaparral, Valley Grassland Between 0 and 9000 feet.
Blooms: spring-summer, white/ huge foliage Zone 3-9. 6', PNW, part shade-sun, moist.
Named after Hercules, a Roman god of great size & strength, this Pacific Coast Native will definitely make a statement in your garden. It has large, bold leaves that are attractively lobed & nearly 2’ in length. The white flowers are arranged in flat-topped umbels & can be 10” across. Blooms June through August & provides nectar for butterflies & other beneficial insects. The flowers turn into attractive tan colored seed heads that smell faintly of anise. Leave the seed heads on the plant through the winter to provide food for birds. The overall plant can reach 5’ tall & wide, has hairy stems, & interesting swollen buds where the leaves begin to emerge. Makes a great statement for the back of the border, & has many interesting uses. Native Americans would roast the young stalks & eat the pith, the young roots were cooked as vegetables-similar to parsnips-& a paste could be made from the dried roots that was used to relieve swollen legs & aching heads. The dry hollow stems were used to make toy flutes or blow guns. Found growing in moist areas along creeks or roadsides, it can still tolerate going dry in the late summer. Reseeds. The tiny hairs on Heracleum can cause skin dermatitis for some people so be sure to wear long sleeves & gloves when gardening around them!

Gardening facts about Heracleum lanatum plant

How to Grow Heracleum lanatum

  • Sun Exposure

    • sun - bright shade
  • Water Needs

    • even moisture - low
  • Soil Needs

    • average
    • well-drained

Features

  • Foliage Color

    • green
  • Flower Color

    • white
  • Wildlife

    • butterflies
    • deer resistant
  • Flower Season

    • spring
  • Foliage Season

    • deciduous
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