Posted: 06/02/2016 at 20:45
WCM if the liner is intact and its not losing water then you could tackle it now. If you can get the trees out from the edge then do so, the roots will find a way through if you don't. Get your volunteers and a couple of rakes and buckets. You can bail out half the depth of the pond and drag out some of the detritus in the bottom, which you leave on the side of the pond for a few days to give the wildlife time to get back in. Most of the wildlife won't resent the disturbance too much and with the mild weather some will be waking already. After a few days remove the detritus and let the pond fill naturally, it will quite quickly with the rain we've been having. Don't refill with tap water. You can add some marginals when it's filled a bit and they'll quickly establish as the weather warms. Wildlife ponds don't need huge maintenance they need ignoring to a degree. There will be loads of critters in there already and you'll see them. If you do it now it'll be just in time for frog spawning. You may have some already and toad spawn so look out for it. Just because it looks bad doesn't mean its not full of life already, nature isn't always pretty. In autumn you can net the pond to reduce leaf litter, the wildlife won't care. They only need maintenance every few years or if they are clogged up.