A little more green in the world ✳ 2,083 plants across 13 growing zones
worldthatgrows.
Vine · Easy

How to Grow Heavenly Blue

Ipomoea tricolor

Your complete guide to growing Heavenly Blue.

☀SunFull sun (6+ hours)
💧WaterModerate, drought tolerant once established
📅Harvest110-120 days
🗺Zones2–12
📏Height8-10 feet
Heavenly Blue📷 Wikimedia Commons

When to Plant Heavenly Blue

Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.

ZoneStart IndoorsDirect SowHarvest
Zone 2 — — —
Zone 3 — — —
Zone 4 — — —
Zone 5 — — —
Zone 6 — — —
Zone 7 — — —
Zone 8 — — —
Zone 9 — — —
Zone 10 — — —
Zone 11 — — —
Zone 12 — — —

Companion Plants for Heavenly Blue

✓ Good companions

Bean Plants

Morning glories can use bean poles for support while beans fix nitrogen in soil

Cosmos

Attracts beneficial insects and pollinators without competing for space

Marigolds

Repels nematodes and various garden pests while attracting pollinators

Nasturtiums

Attracts beneficial insects and acts as trap crop for aphids and cucumber beetles

Sunflowers

Provides sturdy support structure and attracts beneficial insects

Sweet Alyssum

Attracts beneficial insects like lacewings and provides ground cover

Sweet Peas

Similar growing habits and both attract beneficial pollinators

Zinnias

Attracts butterflies and beneficial insects while providing complementary colors

✗ Keep away from

Allelopathic Grasses

Compete aggressively for nutrients and may release growth-inhibiting chemicals

Black Walnut Trees

Produces juglone which is toxic to morning glories and inhibits growth

Dense Shrubs

Create too much shade and compete for nutrients, reducing flowering

Notes from the garden

A greener inbox, occasionally.

Seasonal planting ideas, useful tips and a little inspiration. No weeds.