.... are seen as non native invasive plant and are controlled chemically. Oregon and California
list them as noxious weeds. The problem with them is that they are spread by runners ... lateral
underground roots, canes they grow up and then flop over and then root out, and by seed when the
fruit is eaten by birds and critters and then the seed is passed through the gut and out the animal's
butt and after it has been attacked by the critter's enzymes which helps to get the seed ready to go.
Suggestions:
1 mow a strip about 6 to 8' weed along the border between your property and the one with the
blackberries and keep the blackberries killed out in that strip.
2 Mechanically and chemically control them at first on your property .... mow them off @ as close to
the ground as you can get and then treat the new sprouts with glyphosate or another non selective
herbicide. mark the area and come back and either hoe and or treat the new sprouts when the are not
>6" tall with glyphosate or another non selective herbicide. Do not buy premixed stuff you are just
paying for water. I believe Prairie Moon Nursery in MN is now handling a newer non selective herbicide
to be used instead of glyphosate. Others have used horticultural vinegar too.
Note on using chemicals .... you can not let the perfect be the enemy of the good. The supportive capacity
of our ecosystems and native pollinators are under huge attack by non native invasive species. Got a better
way I am all ears but this is a fight our future .... now the earth until it is swallowed by the sun will always
be here but man not so much.
3 in a vegetable garden area tilling the soil also can help to control Rubus sp. (blackberry)
4 Nature hates a vacuum so if you remove something replace it with a native plant .... where possible
5 Join the Xerces Society and ask if they have somebody in your area or contact your local soil conservation
service or district.
note: I do have a customer who I prune and feed her black raspberry and she pays me in fruit.
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