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Week 9 – February 26, 2024

Plant Information

Ruellia Southern Star Blue

  • Ruellia Southern Star Blue - Bloom
Growing Information:
Culture Guidelines
Marketing Information:
Bench Card
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Plant Details:

Scientific Name: Ruellia brittoniana (Ruellia tweediana)

Common Name: Mexican Petunia

Hardiness Zone: 8a - 11

Hardiness Degree: 10°F (-12.2°C)

Blooming Season: Late Spring, Summer, Late Summer

Plant Habit: Mounded

Characteristics: Attracts Bees, Attracts Butterflies, Drought Tolerant, Heat Tolerant, Low Maintenance

Water: Medium

Fertilize: Every two weeks

Spacing: 12" (30cm)

Height: 10 - 12" (25 - 30cm)

Width: 16 - 18" (41 - 46cm)

Exposure: Sun

General Information: A great option for mixed containers and in-ground plantings in very hot conditions like Texas and Florida. Not intended for northern use.

Grower Information:

Plug crop time: 5 to 6 weeks
Transplant to finish: Spring 10 weeks, Summer 8 weeks

  • The first dwarf ruellia from seed is easy to program and produces clean green foliage. 
  • Low-maintenance; tolerates both wet and dry conditions.
  • Great for southern perennial programs – hardy to Zone 8 (10°F/-12°C minimum temperature).
  • Can be used as an in-ground or container annual in other regions, but not recommended for the far North.

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