PlantFun
Plant Needs
Sunlight
Full sun to partial shade; requires at least 6 hours of direct daily sunlight for optimal blooming performance
Watering
Water deeply when the top 5–7 cm of soil dries out; avoid overwatering to prevent root rot and fungal growth
Temperature
Hardy to USDA zone 4; tolerates cold winters and moderate summer heat, withstanding short periods of frost
Characteristics
- Leaf: Opposite, lanceolate to ovate leaves with serrated margins, medium green
- Flower: Tubular, bell-shaped blooms in pink, lavender, or white; prominent fuzzy staminode (beardtongue)
- Stem: Erect, sturdy green stems with minimal branching
Care Guide
Watering
Keep soil consistently moist during active growth and blooming
Fertilization
Apply diluted balanced fertilizer once monthly. Avoid over-fertilizing, as excessive nitrogen can reduce flower production
Eggshell powder topdressing：Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around the base of plants in spring to boost soil calcium and prevent blossom end rotPruning
- Deadhead spent blooms regularly to encourage extended flowering through early summer
- Cut back stems to 10–15 cm above soil level in late autumn to promote vigorous new spring growth
- Thin overcrowded clumps every 2–3 years to improve airflow and reduce disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats; no reported toxicity
Humans: Non-toxic to humans; no known adverse health effects from ingestion or contact
Garden Uses & Culture
Culture: N/A
Usage: Ornamental garden plant, cut flower; attracts pollinators including bees and hummingbirds
