Alan Titchmarsh has warned green-fingered home owners not to make a big mistake when planning their garden. The 76-year-old has amassed decades of gardening experience since he started buying seeds from Woolworths as a child. He left school aged 15 and went to work as an apprentice gardener at Ilkley Council in Yorkshire before working at Kew Gardens. He later saw his career pivoting towards journalism as he began editing and subsequently writing gardening books. Alan launched his television