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Flower · Easy

How to Grow Giant Dahlia Flowered Mix

Zinnia elegans

Your complete guide to growing Giant Dahlia Flowered Mix.

☀SunFull sun (6+ hours)
💧WaterRegular, consistent moisture
📅Harvest75-90 days
🗺Zones2–11
📏Height0-3 feet
Giant Dahlia Flowered Mix📷 Wikimedia Commons

When to Plant Giant Dahlia Flowered Mix

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 Giant Dahlia Flowered Mix

✓ Good companions

Chives

Repel aphids and thrips with their sulfur compounds

Cosmos

Attract beneficial insects and pollinators while providing similar growing conditions

Lavender

Repels moths, fleas, and other pests while attracting beneficial pollinators

Marigolds

Repel aphids, whiteflies, and nematodes while attracting beneficial insects

Nasturtiums

Act as trap crops for aphids and cucumber beetles, drawing pests away from dahlias

Sunflowers

Provide wind protection and attract beneficial birds that eat pest insects

Sweet Alyssum

Attracts hoverflies and parasitic wasps that control aphids on dahlias

Zinnia

Attract ladybugs and other beneficial insects that control dahlia pests

✗ Keep away from

Black Walnut

Produces juglone toxin that inhibits dahlia growth and can cause wilting

Eucalyptus

Root secretions are toxic to many flowering plants including dahlias

Fennel

Releases allelopathic compounds that stunt dahlia growth and development

Notes from the garden

A greener inbox, occasionally.

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