Mila-a-minute weed (Persicaria perfoliata) is an invasive climbing vine. It prefers very wet soil and can be found in open spaces, along streambanks, and in fence lines. The main vine leaves are triangular and have barbs on the underside that are used to climb structures and other plants. There are also small round leaves that can be found below the flowers. The flowers bloom in the summer and are white and small. The fruit is visible in July, grow on spikes, and are pea sized.
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Envrionmental effects
Birds are the main source of seed dispersal. Plants can show up miles away from a known patch. In only 6 to 8 weeks the vine can grow 25 feet. This allows it to take over native vegetation and has the ability to smother plants and seedlings. This can decrease native biodiversity and reduce the quality of wildlife habitat. Mile-a-minute weed can be extremely harmful on tree farms and plant nurseys. It is best to begin treatment as soon as the species is identified.
Treatment
There are both chemical and non-chemical treatment options for mile-a-minute weed.
NON-CHEMICAL CONTROL METHODS
- Hand pulling: seedlings can be removed easily from the ground before barbs have formed on the underside of leaves. If the barbs have formed, you can wear thick gloves to protect yourself. Vines can be removed throughout the year. It is best to burn the vines or leave then in a place they are unable to resprout. Note: it is best to do this before seeds have been produced.
- Mowing: for vines that are low to the ground mowing is an effective option. Repeatedly mowing can reduce the number of seeds being produced and the amount of new growth.
CHEMICAL CONTROL METHODS
- Foliar spraying: herbicide can be sprayed directly onto the leaves. This should not be done when other plants are growing under the vine because any overspray can kill the unintended plants.