Seed Treatment:
- Scarification:
- Gently nick or file the seed coat using a nail file or sandpaper.
- This helps water penetrate the hard outer shell.
- Pre-Soaking:
- Soak seeds in warm water (not boiling) for 12–24 hours before planting.
- This softens the seed coat and encourages quicker sprouting.
Sowing Instructions:
- Timing:
- Direct sow after the last frost, when soil temperatures reach 65–75°F (18–24°C).
- Can be started indoors 4–6 weeks before the last frost for an early start.
- Sowing Depth:
- Plant seeds ¼ inch (6 mm) deep.
- Lightly cover with soil and firm gently.
- Spacing:
- Space seeds 6–12 inches (15–30 cm) apart.
- If growing on a trellis, thin to 12 inches (30 cm) apart after germination.
- Soil Requirements:
- Prefers well-drained, moderately fertile soil.
- Tolerates poor soil but thrives in a neutral to slightly acidic pH (6.0–7.0).
- Watering:
- Keep soil evenly moist during germination but avoid overwatering.
- Once established, morning glories are drought-tolerant and require minimal watering.
- Germination Time:
- Seeds usually sprout in 5–21 days.
- Sunlight:
- Requires full sun (at least 6–8 hours of sunlight daily).
Additional Tips:
- Provide a trellis, fence, or support for climbing varieties.
- Avoid over-fertilization, as too much nitrogen promotes leaves over flowers.
- Morning glories self-seed readily, so deadhead spent flowers to prevent excessive spreading.
Enjoy the fast-growing vines and vibrant trumpet-shaped blooms that attract butterflies and hummingbirds!