How to Grow Sweet Pea Cupani
Lathyrus odoratus 'Cupani'
Your complete guide to growing Sweet Pea Cupani.
📷 Wikimedia CommonsWhen to Plant Sweet Pea Cupani
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 Sweet Pea Cupani
✓ Good companions
Ground cover that attracts predatory insects like hoverflies
Attracts beneficial insects and provides natural pest control
Repels aphids and other soft-bodied insects with strong scent
Attracts pollinators and beneficial predatory insects
Deters moths and flies that can damage sweet pea flowers
Repels nematodes and aphids while attracting beneficial insects
Acts as trap crop for aphids and cucumber beetles, protecting sweet peas
Attracts beneficial insects and doesn't compete for nutrients
✗ Keep away from
Produces juglone which is toxic to sweet peas and many other plants
Strong allelopathic properties suppress growth of most companion plants
Allelopathic compounds inhibit germination and growth of nearby plants
