We had already set up our poly tunnel and water butt and we are looking after our plants by collecting used coffee grains to help the soil.We have collected coffee grounds from our local coffee shop. Here are some other tips 

There are several ways you can put used coffee grounds to work in your garden:

• Put coffee grounds in your compost bin. they are a valuable source of nitrogen.
• Add grounds directly to the soil in your garden. You can scratch it into the top couple inches of soil, or just sprinkle the grounds on top and leave it alone.
• Create a slug and snail barrier. Coffee grounds are both abrasive and acidic, so a barrier of grounds placed near slug-prone plants may just save them from these garden pests.
• Make coffee ground "tea." Add two cups of used coffee grounds to a five-gallon bucket of water. Let the "tea" steep for a few hours or overnight. You can use this concoction as a liquid fertilizer for garden and container plants. It also makes a great foliar feed.
• Add coffee grounds to your worm bin. Worms love coffee grounds! Add some to your worm bin every week or so.