Gardeners' Question Time - Postbag Edition

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Peter Gibbs chairs a postbag programme from the GQT potting shed in Sparsholt College. Bob Flowerdew, Matthew Biggs and Pippa Greenwood answer listeners' letters.

Peter Gibbs chairs a postbag programme from the GQT potting shed in Sparsholt College.

Bob Flowerdew, Matthew Biggs and Pippa Greenwood answer the questions you've sent in by post and email. In addition, is green manure compatible with 'no dig'? And how does long-term seed storage affect plant health?

Questions answered in the programme: I bought bare-rooted blackcurrant bushes that eventually turned out to be redcurrant bushes. What is the best to tell the difference early on? How can I encourage my lemon tree to flower earlier? Can the panel suggest annuals/perennials to suit a Queen's Diamond Jubilee motif? Plant suggestions included: Petunias, Lobelia, & bedding Salvias. The lawn beneath our conifers is damaged. Which lawn seeds do you recommend for the affected area? Is green manure compatible with 'no dig' gardening? How does long-term seed storage affect plant health? If over-watering tomatoes reduces their flavour, does that make hydroponic cultivation a bad idea? Could I grow an espaliered Bramley in free ground, unsupported? How can I create a lavender garden from my north-facing gravel garden? Why doesn't my Garrya eliptica have tassels? What can I plant as a wind-breaking hedge beside 4 tennis courts? Suggestions included: Leylandii and Thuja.

Produced by Howard Shannon A Somethin' Else production for BBC Radio 4.