How to Grow Costa II Mix
Antirrhinum majus
Your complete guide to growing Costa II Mix.
📷 Wikipedia: Antirrhinum majusWhen to Plant Costa II Mix
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| 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 Costa II Mix
✓ Good companions
Attracts pollinators and repels tomato hornworms and cabbage worms
Repels mosquitoes, ants, and rodents more effectively than DEET
Repels moths, fleas, and mosquitoes with its strong fragrance
Repel nematodes and aphids while attracting beneficial insects
Act as trap crops for aphids and cucumber beetles, plus attract pollinators
Repel aphids, tomato hornworms, and other garden pests
Attracts beneficial insects like lacewings and provides ground cover
Attract butterflies and beneficial insects while providing color contrast
✗ Keep away from
Releases juglone toxin that inhibits growth of many flowering plants
Strong allelopathic properties suppress growth of surrounding vegetation
Allelopathic compounds inhibit growth and germination of nearby plants
