Lobelia Crystal Palace Violet-Blue Flower Seeds | 200 Seeds

💙 How to Grow & Care for Lobelia ‘Crystal Palace’ (Violet-Blue)

Thank you for choosing ‘Crystal Palace’ Lobelia! This classic heirloom lobelia is loved for its intense violet-blue flowers and deep bronze-green foliage. It makes a soft, trailing spill in baskets and a dreamy edge in garden beds.

With a little patience at the start, you’ll get a long season of color!

🌿 Quick Facts

Botanical name: Lobelia erinus
Type: Tender annual (perennial in warm zones)
Height: 4–8 in (10–20 cm)
Spread: 8–12 in (20–30 cm), mounding/trailling
Bloom time: Late spring through fall
Best for: Borders, containers, hanging baskets, window boxes
Sun: Full sun to part shade (prefers cooler light)

🗓 When to Plant (USA Guide)

Lobelia is cool-loving and slow to start, so begin early.

Start Indoors

• 8–12 weeks before last frost

• Most zones = Feb–Apr indoors

Transplant Outdoors

• After last frost, once nights stay above 45°F / 7°C

Direct Sow Outdoors (only in mild climates)

• After frost, in cool spring weather

• Works best in Zone 8+ or coastal climates.

🌱 How to Sow Seeds

Lobelia seeds are tiny like dust—don’t bury them!

1. Fill trays/pots with moist seed-starting mix.

2. Sprinkle seeds on the surface.

3. Do not cover (they need light to germinate).

   • You can press gently to ensure contact.

4. Mist with water or bottom-water.

5. Cover with a clear dome or plastic wrap to hold humidity.

6. Keep bright and cool.

Germination: 14–21 days
Ideal temp: 65–70°F (18–21°C)
Cooler temps help prevent stretch.

🌤 Light Needs

• Bright light is key indoors: sunny window or grow light.

• Outdoors:

  • Full sun in cool climates

  • Part shade in hot climates (afternoon shade is perfect)

Too much heat + harsh sun can slow flowering.

💧 Watering

Lobelia likes even moisture—never bone-dry.

• Keep soil lightly moist, not soggy.

• In containers, water more often.

• Mulch in ground plantings to preserve moisture.

Tip: If plants wilt, water quickly—they bounce back fast!

🌾 Soil

• Rich, well-draining soil gives best blooms.

• Add compost or a gentle all-purpose potting mix.

• pH neutral to slightly acidic is great, but they’re flexible.

✂️ Pinching & Maintenance

• When seedlings are 1–2 inches tall, pinch tips for bushier growth.

• Deadhead lightly or shear back by ⅓ in midsummer to refresh blooms.

• If it gets leggy, a quick trim brings a fresh flush of flowers.

🌸 Feeding

Lobelia is a steady bloomer and appreciates light feeding:

• Use a balanced liquid fertilizer every 2–3 weeks in pots.

• In garden beds, compost is usually enough.

Avoid heavy high-nitrogen feeds (too leafy, fewer flowers).

🐛 Common Issues (Easy Fixes)

Leggy seedlings
→ Too warm or not enough light. Keep cooler + bright light.

Slow bloom in summer heat
→ Normal. Give afternoon shade + consistent moisture. Blooms return when temps cool.

Mildew/rot
→ Too wet + bad airflow. Let surface dry slightly between watering.

❄️ Overwintering (Optional)

In warm climates (Zone 9–11), lobelia may survive as a short-lived perennial.
In colder zones, treat as an annual or take cuttings before frost.

🌟 Pro Tip for Gorgeous Displays

Plant lobelia in clusters for that “carpet of blue” look, and pair with:

• white alyssum

• pink petunias

• silver dusty miller

• or dark foliage plants for contrast

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