Possible Clues:

• The Tube one can take to Kew Gardens?
• Socks, maybe churchwarden's gardening gear
• Hothead from revolutionary Cuban capital to address energy used for watering gardens
• Bed-wetter?
• Tube, the use of which may be banned during British droughts
• What may be banned in summer is tights and slippers accompaniment
• Heroin from South American capital served up at address with ecstasy and something synonymous with the hookah
• Long tube (often banned in periods of drought)
• Use this in garden and expect to receive fresh pies
• Flexible watering tube