[sabrina]

Once the weather improves I need to use my tunnel to start of some veg seeds. This winter it is looking pretty green on the insides and I would like to know what can I wash it with that will not damage soil or plants already in there. Ideas please.

[Fowgill Farm]

I use fairy liquid with a tot of bleach in a bucket; a brush on a long pole then with hosepipe attached to it to rinse, to do mine but i do believe there a proprietory brands that do the job too.
mandy

[Fleecewife]

Citrox is good against green algae and is completely harmless to plants and the environment.  I use it to scrub seed trays and pots.  You can get it from the Organic Gardening Catalogue but it would be worth checking other sources too.   I add Ecover washing up liquid to the Citrox when I wash pots
For our tunnel, we use a pressure washer, but you need to make sure it doesn't splash back onto the plants - maybe you could cover them.  A small pressure washer is surprisingly cheap and of course can be used on vehicles too.

[supplies for smallholders]

Try MMC Pro - it will kill all algae and moss on hard surfaces.

[sabrina]

Thankyou will look into that.

[edessex]

We always used washing up liquid and a broom on the tunnels and glasshouses.