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Flower · Easy

How to Grow Autumn Beauty

Helianthus annuus

Your complete guide to growing Autumn Beauty.

☀SunFull sun (6+ hours)
💧WaterModerate — regular watering
📅Harvest75-85 days
🗺Zones2–11
📏Height1-10 feet
Autumn Beauty📷 Wikimedia Commons

When to Plant Autumn Beauty

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 Autumn Beauty

✓ Good companions

Beans

Fix nitrogen in soil which benefits sunflowers, can use sunflower stalks for support

Borage

Attracts pollinators and beneficial insects, may improve soil nutrients

Cleome

Attract beneficial insects and pollinators, complement tall sunflower structure

Cosmos

Attract pollinators and beneficial predatory insects, similar growing requirements

Lavender

Repels pests like moths and beetles while attracting beneficial pollinators

Marigolds

Repel aphids, whiteflies, and nematodes while attracting beneficial insects

Nasturtiums

Act as trap crops for aphids and cucumber beetles, repel squash bugs

Zinnias

Share similar care needs and attract butterflies and beneficial insects

✗ Keep away from

Black Walnut Trees

Produce juglone toxin that inhibits sunflower growth and development

Fennel

Releases allelopathic compounds that can stunt sunflower growth

Potatoes

Compete for similar nutrients and may increase risk of shared pest problems

Notes from the garden

A greener inbox, occasionally.

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