Plate III. View of main Heather area August 1978 showing some of the dif- ferent-aged blocks. The area of young growth on the right was flailed about 1970 and consists of mixed cross-leaved heath and ling. The mature ling on the left is 90cm in height and over 20 years old. David Corke was dug to cut off the car park from the main body of the Heath. Casual litter is a perpetual problem and warrants an annual litter clearance each October. Nature conservation management involves interference in a cycle of natural succession and with a habitat as transitional as heathland it is vital. There are quite a lot of remnant heaths in Essex, and also commons with heathland features but, in fact, the total area covered by an ericaceous heathland community is only about ten acres, most of which is on Tiptree Heath. Our main priority therefore is to maintain the vigour of the existing heather (Calluna and Erica spp.) areas by periodic cutting of elderly plants to obtain a pattern of uneven-aged blocks and to contain invading gorse (Ulex europaeus Linn.) and birch (Betula spp.) scrub. Another important priority is to retain existing grass as grassland by flailing if necessary and to win back extinct grass areas whenever gorse fires present the opportunity. Grassland is an important heathland habitat and at the same time the means by which the heather species will spread. Bell heather 8