‘Optimal Shelterbelts’ (OSB)^® are the proven design of the 5 metre wide, 4-row shelterbelt and windbreak (Oxford University) which gives you the maximum potential microclimate in the lee of the prevailing wind, increasing the ambient humidity, the soil temperature and the ‘crop degree days’ at the same time reducing wind abrasion, as in a polytunnel. This is likely to extend to 20 x the height of the tallest trees – i.e. when the trees are 10 metres high the microclimate bubble will extend as far as 200 metres from the OSB^® designed trees and shrubs. From £39.30 per 1 metre measured length of OSB^® including VAT & delivery. ‘Supahedge’^® is the 2 metre wide, 2-row shelterbelt which uses less land but which complies exactly with the government SFI/CSS specification of Creating New Hedgerows (BN11) From £38.70 per 1 metre measured length of Supahedge^® including VAT & delivery. Buying Options OSBs and Supahedge^® are sold ‘per metre’ run and comprise all the items required in either a 5m width of OSB, or 2m width of Supahedge per metre run of length – i.e. all the different tree species, their guards, stakes, biodegradable matting and securing pins. You will need to measure the length of your proposed hedge and multiply the cost by the number of metres and we will do the rest. For best effect please remember that eddying and turbulence is possible in lengths of less than 100 metres.