Matt James, garden presenter and lecturer, met with Trebah's Head Gardener Darren Dickey and Howard Shannon, producer of Gardeners Question Time, to talk about the giant plants of Trebah.
Matt can be seen pictured with Darren in amongst the stand of Phyllostachys edulis - one of the many Trebah giants.
You can listen again on Radio 4. Trebah features about 30 minutes into the show. We hope you enjoy it.