garden watering problems

hi all

i am a new member and keen amerture gardener. i have been working on a solar powered rainwater collected sprinkler system as i was told (by my mum) that drip systems are not very good at all.
all i need to know really is how much watering do my plants need??
i am growing a wild meadow garden and have a greenhouse and am automactically watering all 3 times a day-is this too much?

please help as im new at this but i dont want to kill my plants

 

Solaris, I would say that it depends on the plants and the soil. Its not (for me) an exact science i feel the soil and decide weather to water or not. I am sensing that this wont help!

 

I've resisted the temptation to water tonight.
A higher authority insisted on helping out.

It aint half wet out there