Location specific values:
Array
(
    [lat] => 3.437220
    [lng] => -76.522500
    [elevation] => 966.6419
    [rainfall] => 2068.6603
    [cold_temperature] => 18.13
    [temperature] => 30.1974
    [user_eto] => 1499.81949726
)
Plant specific values:
Array
(
    [rain_min_irrigation] => 765
    [eto_corrected] => 816
    [eto_adjusted_rain_min (rain_min_irrigation / eto_corrected)] => 0.9375
)
Hoary Willowherb (Epilobium parviflorum) | Easyscape Plant Profile

Hoary Willowherb

(Epilobium parviflorum)

Hoary Willowherb (Epilobium parviflorum)

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Estimated Native Range
Species Map Help

Climate Requirements for Cali, Colombia

This Plant Your Site Plant Suitability for Your Location
Precipitation 5" - 99" 81" Aquatic Aquatic
High Temp. 48°F - 105°F 86°F Your summer temperatures are normal for this plant. Excellent
Low Temp. -9°F - 57°F 65°F OK, but your winter temperatures are warmer than normal for this plant OK
This plant may not grow well at your location - your precipitation is too high.

Summary

Epilobium parviflorum, commonly known as Hoary Willowherb, is an herbaceous perennial that is native to a variety of moist habitats including marshes, swamps, and moist mountain meadows across Europe, North Africa, and Western Asia. It thrives at elevations up to 8202 feet. This species typically grows to a height of 12-31 inches with hairy stems and lanceolate leaves. The plant produces small pink to purple flowers in the summer, which are modest in appearance but can add a splash of color to naturalistic plantings.

Hoary Willowherb is valued for its ability to thrive in wet conditions and is often used in rain gardens, bog gardens, and other water-influenced landscapes. It is also appreciated for its ease of maintenance and its use in traditional medicine. In cultivation, it prefers full sun to partial shade and requires consistently moist soil. While it is not known for serious pest or disease problems, it can spread aggressively by seed and rhizomes, potentially becoming invasive outside its native range. Gardeners should be cautious and check local regulations before planting.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 1.5-3 feet
  • Width: 1-2 feet
  • Growth Rate: Moderate
  • Flower Color: Pink
  • Flowering Season: Summer, Fall
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Full Sun
  • Water: Medium, High
  • Drainage: Medium, Slow

Common Uses

Low Maintenance, Water Garden

Natural Habitat

Native to marshes, swamps, and moist mountain meadows across Europe, North Africa, and Western Asia

Other Names

Common Names: Hoary Willowherb, Smallflower Hairy Willowherb

Scientific Names: Epilobium parviflorum, Chamaenerion parviflorum, Chamaenerion pubescens, Epilobium adnatum var. villosum, Epilobium caballeroi, Epilobium cordatum, Epilobium hirsutum, Epilobium hirsutum, Epilobium hirsutum subsp. parviflorum

GBIF Accepted Name: Epilobium parviflorum