AS OUR nights draw in, Australia welcomes spring. To celebrate the fact, a Wildflower Heritage Cycling Tour has been organised by a company called On Your Bike WA. You bring a bicycle and tent; the organisers supply meals, back-up vehicles with mechanics, and route plans. The nine-day ride costs Adollars 320 (about pounds 150), and return flights in October are available from Austravel (071-734 7755) for pounds 599. Bookings close next Saturday, so enquiries should be phoned or faxed to On Your Bike WA in Perth, Western Australia, on 010 61 9 444 2892.