posted 11 years ago
Wild berries around here in the PNW, are incredible, durable plants. People actually curse them. Pay hundreds of dollars to get people to come root them out, but unless that is followed by a season or two of hogs, the berries will persist. Then, the same people will go to the supermarket and pay $5.95 for a basket of berries (that they could have picked in less than 2 minutes in their back yard).
From our local experience, 'maintenance' is picking (before the birds wipe 'em out). By the end of summer, those weeds should be dieing of thirst, and the berry bushes growing enough that the weeds shouldn't be a problem next year. You could pull them, but around here, that would just be a waste of time. Mulch? Eh. Compost? Why not, it never hurt anything.
YMMV. Around here, blackberries are considered 'invasives'. They seem to do best in 'full sun' here, but our sun is kind of lacking...full season tomatoes and most peppers don't produce well around the Puget Sound - not enough sun.
Find some good vanilla ice cream and enjoy !