North County San Diego - Farmers Markets
Here are some of the local farmers markets in North County from the San Diego County Farm Bureau.
Buy Local San Diego Produce by visiting one of the Certified Farmers’ Markets (CFM) in San Diego County allows you to experience agriculture. Farmers’ Markets provide venues for farmers to sell directly to consumers and supports small farming operations. 
State Street Farmers Market - (Carlsbad Village) - Wednesdays 2:30 to 7 (Daylight Saving Time hours). Closes at 6 pm during standard time/Winter. Location: 2900 block of State Street between Carlsbad Village Dr. and Grand Ave. (714) 257-5859.
Leucadia (Encinitas) Farmers Market - Sundays 10 to 2. Location: 185 Union Street at Paul Ecke Central Elementary School (858) 272-7054.
Cardiff Farmers Market - (aka Cardiff by the Sea) - Saturdays 12 to 2. Location: Mira Costa College San Elijo campus, 3333 Manchester Ave.
Solana Beach Farmers Market - Sundays 1 to 4. Location: 444 S. Cedros Ave. Closed on Easter, July 4 and Christmas Sundays.
Oceanside Farmers Market - Thursdays 9 to 1. Located at 401 Pier View Way (at North Coast Highway). (760) 754-4512.
Vista Farmers Market - Saturdays 8 to 12. Location: San Diego Regional Courthouse Complex, 345 S. Melrose Ave. (760) 945-7425. The longest running farmers market in San Diego, since 1981.
San Marcos Farmers Market - Thursdays 3 - 7. Location: 251 North City Drive (760) 744-1270.
Del Mar Farmers Market - Saturdays 12 - 4. Location: Civic Center, 1050 Camino Del Mar (760) 453-9837.
Sources: https://athomeincarlsbad.com/north-county-farmers-markets/ and https://www.sdfarmbureau.org/farmers-market/