Seasonal Color Growers

Providing quality annuals and perennials for landscape professionals since 1999

Penstemon

Onyx and Pearls

This Penstemon has a mysterious presence in the garden with the dark foliage but it comes to life with soft lavender flowers with white centers. Tough as nails, Onyx and Pearls Penstemon is tolerant of our Southern Region's brutal summer conditions, both heat and humidity.

Don't underestimate the design possibilities by using the dark foliage to highlight companion plants.
  • Planting & Care

Size & Spacing

  • Bed Spacing: 36-42"
  • Container Spacing: 8"
  • Mature Width: 36-42"
  • Mature Height: 36-42"

Planting Type

  • Containers
  • Mid
  • Tall
  • Accent

Seasons

  • Spring
  • Summer

Type

  • Perennial

Sun/Shade

  • Full Sun

Growth Habit

  • Upright
  • Water Requirements

    • Normal
    • Low *

    Fertilizer

    • Average
    • Light Feeder

Colors

    Tolerant to

    • Heat

    Attracts

    • Bee Friendly
    • Butterflies
    • Hummingbirds

    Other

    • Foliage Interest

    Bloom/Interest Range

    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec

    * Low Water Requirement:
    After this plant is well established, it has a lower than average water requirement. A good layer of mulch will also help reduce water needs.