Purple Deadnettle
About This Species
Purple deadnettle is native to Europe and a common weed throughout BC. It survives as an annual or biennial. A single plant can produce thousands of seeds which remain viable in the soil for several years. It can also spread via stem and root fragments. Purple deadnettle thrives in a range of soil types from dry to moist and is frequently observed in lawns, waste areas, and gardens
How to Identify
Purple deadnettle is identified by its square stems, hairy foliage (deep purple/plum top leaves, fading to green towards the base of the stem) and pink flowers from March-May that bloom in the crease where the leaves meet the stem (these are called axillary flowers). Leaves on the top of the plant are smaller than those on the bottom and range from oval to heart shaped. From afar, Purple deadnettle forms a dusty purple “carpet” effect.
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If you need advice about invasive species on your property or you are concerned about reported invasives in your local area, contact your local government or regional invasive species organization.
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Prevent the spread of this plant – never purchase or plant this species. If you have an infestation, focus efforts on continued mowing/cutting of the plant just prior to flowering to reduce seeding.
A few non-invasive alternatives to plant instead of Purple Deadnettle include:
- Kinnickinnick (Arctostaphylos uva-ursi)
- Wild Ginger (Asarum caudatum)
- False Lily-of-the-valley (Maianthemum dilatatum)
- Bunchberry (Cornus canadensis, C. suecica, C. unalaschkensis)
- Snow-in-summer (Cerastium tomentosum)
