Seed Treatment
SOAK seeds in room-temperature water for 2–4 hours before sowing.
Best Time to Sow
Late spring to early summer. Sow indoors anytime for year-round houseplants.
Optimum Temperature
Day & Night: 70–75°F (21–24°C)
Warm, consistent temperatures are key. Avoid drafts and cold spots.
Germination Time
Typically 5–14 days, but may take up to 28 days.
Sowing Instructions
- Use a fine, well-draining seed-starting mix
- Moisten soil lightly before sowing
- Sow seeds on the surface; press gently but do not cover (they need light to germinate)
- Cover tray with clear plastic or use a humidity dome
Light Requirements
Bright, indirect light or 12–16 hours of grow light daily. Avoid direct sun at the seedling stage.
Humidity & Water
Maintain high humidity (around 70–80%). Mist regularly or use a covered tray. Keep the soil moist, never soggy.
Post-Germination Care
Once seedlings emerge:
- Remove cover to reduce damping-off
- Thin to the strongest plants
- Transplant when they have 2–3 sets of true leaves
- Keep in warm, bright conditions with consistent moisture
Tip:
This is a warm-climate tropical plant and prefers stable indoor conditions.
Care Tips
Light – Needs bright, indirect light for vibrant colors. Low light makes leaves turn greener.
Water – Keep soil consistently moist but not soggy. Avoid drying out completely.
Humidity – Requires above 50% humidity for healthy growth.
Fertilizer – Feed once a month with liquid fertilizer.
Temperature – Thrives at 70-75°F; avoid temperatures below 60°F.
Pruning – Trim regularly to prevent flowering and keep the plant bushy.
Repotting – If root-bound, repot mid-season to encourage continued growth.
Common Issues
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Pests: Susceptible to scale, whiteflies, and aphids. Use warm, soapy water to control infestations.
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Legginess: Trim to maintain a compact shape and prevent flowering.
With proper care, Polka Dot Plants can be grown as perennials rather than annuals. Follow these tips, and you’ll have a lush, colorful houseplant that lasts for seasons!