Side-by-side plant comparison — which is right for your garden?
Iris germanica
Iridaceae · flowers
Lathyrus odoratus
Fabaceae · flowers
Iris (Zones 3-9)
Sweet Pea (Zones 2-11)
Overlap: Both grow in zones 3–9
| Feature | Iris | Sweet Pea |
|---|---|---|
| Scientific Name | Iris germanica | Lathyrus odoratus |
| Family | Iridaceae | Fabaceae |
| Category | flowers | flowers |
| Sun | ☀️ Full Sun | ☀️ Full Sun |
| Water | 💧 Low to Medium | 💧💧 Medium |
| Soil | Well-drained | Rich, Well-drained |
| Height | 3' | 6' |
| Spread | 1' 6" | 1' |
| Bloom Season | Spring | Spring-Summer |
| Bloom Color | Purple, Blue, Yellow, White | Mixed |
| Growth Rate | Medium | Fast |
| Native Region | Mediterranean, Europe | Italy, Sicily |
| Maintenance | Low | Medium |
Iris
Sweet Pea
Iris
Sweet Pea
Choose Iris if you want a low-maintenance plant, need drought tolerance, and want deer resistance. It thrives in full sun with low to medium water in zones 3–9.
Choose Sweet Pea if you don't mind medium maintenance, and want deer resistance. It thrives in full sun with medium water in zones 2–11.
Plant them together? Both overlap in zones 3–9. They share similar sun requirements (full sun), making them potential garden companions.
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