marnie's ranch is never open when i need hay

For the silo, Robin builds it for 100g, 100 stone, 10 clay and 5 copper bars. It has to be up before you cut, grass cut without one is just lost. Leave a patch uncut too so it keeps spreading.

she's open 9am to 4pm and closed mondays and tuesdays, so if you only ever go late or early in the week that's why. long term fix is a silo. once you have one, cutting grass with the scythe stores hay automatically, and if you plant a few grass starters in a fenced area you'll barely need to buy any. buy a stack of 50 or so in autumn before grass stops growing in winter.