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How to Grow QIS™ Lilac

Consolida ajacis

Your complete guide to growing QIS™ Lilac.

☀SunFull sun
💧WaterRegular, consistent moisture during growing season
📅Harvest80-90 days
🗺Zones1–11
📏Height24-36 inches
QIS™ Lilac📷 Wikimedia Commons

When to Plant QIS™ Lilac

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

ZoneStart IndoorsDirect SowHarvest
Zone 1 May – June July – September —
Zone 2 April – May June – August —
Zone 3 April – May June – August —
Zone 4 March – April June – July —
Zone 5 March – April May – July —
Zone 6 March – April May – July —
Zone 7 February – March April – June —
Zone 8 February – March April – June —
Zone 9 January – February March – May —
Zone 10 January February – April —
Zone 11 January January – March —
Zone 12 January January – March —
Zone 13 January January – March —

Companion Plants for QIS™ Lilac

✓ Good companions

Alliums

Natural pest deterrent that repels aphids and other soft-bodied insects

Catmint

Deters aphids and ants while attracting beneficial insects

Clematis

Can climb through lilac branches providing extended bloom season

Hostas

Provide complementary foliage texture and thrive in similar partial shade conditions

Lavender

Attracts beneficial pollinators and repels pests with similar growing requirements

Marigolds

Repel nematodes and aphids while attracting beneficial predatory insects

Peonies

Compatible growing conditions and complementary bloom times

Roses

Share similar soil preferences and lilacs may help deter some rose pests

✗ Keep away from

Black Walnut Trees

Produce juglone which is toxic to lilacs and inhibits their growth

Eucalyptus

Releases allelopathic compounds that inhibit growth of nearby plants

Large Maple Trees

Create too much shade and compete aggressively for water and nutrients

Notes from the garden

A greener inbox, occasionally.

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