bush crop England english fruit glasshouse Great Britain greenhouse leaves nectarines prunus persica red ripe Sussex trained tree Allium schoenoprasum bud chives garden green herb natural nature plant spring stalk stem vegetable acorn autumn cup English oak nut Quercus robur reproduce reproduction seed Cornish cornwall cowslip flowers meadow petals Primula veris Primulaceae wild yellow architecture bolted door elements historical iron locked old secure security stone studded wooden carduus flower prickle Prickly South Downs spine spiny summer thistle ancient brick Buckinghamshire history landmark mill Quainton rural sail wind windmill Abbey arch building christian church graves Malmesbury mediaeval religion religious classical Greenwich London mansion Old Royal Naval College white windows