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Flower · Easy

How to Grow Katz Formula Mix

Matthiola incana

Your complete guide to growing Katz Formula Mix.

☀SunFull sun to partial shade (4-6+ hours)
💧WaterRegular, consistent moisture; avoid waterlogging
📅Harvest90-100 days
🗺Zones6–10
📏Height1-3 feet
Katz Formula Mix📷 Wikipedia: Flower

When to Plant Katz Formula 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 Katz Formula Mix

✓ Good companions

Borage

Attracts pollinators and beneficial insects while improving soil health

Chives

Repel aphids and Japanese beetles with their strong scent

Cosmos

Attract beneficial insects and provide structure without competing for nutrients

Lavender

Repels moths, fleas, and mosquitoes while attracting pollinators

Marigolds

Repel nematodes, aphids, and other pests while attracting beneficial insects

Nasturtiums

Act as trap crops for aphids and cucumber beetles while repelling squash bugs

Sweet Alyssum

Attracts beneficial insects like lacewings and hoverflies that prey on pests

Zinnia

Attract butterflies and beneficial insects while providing continuous blooms

✗ Keep away from

Black Walnut

Releases juglone toxin that inhibits growth and can kill sensitive flowers

Eucalyptus

Allelopathic properties suppress growth of nearby plants

Fennel

Inhibits growth of most garden plants through allelopathic compounds

Notes from the garden

A greener inbox, occasionally.

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