Monty Don offers advice on the best apples and pears to grow in small spaces when he begins to plant up his new fruit garden and gets on with planning for colour when he adds some summer flowering bulbs. As April gets underway, Carol Klein chooses the primrose as her plant of the month and the programme meets a couple from Yorkshire who have a passion for growing fruit and have filled their garden with over 100 fruit trees. As part of the programme's 50th anniversary, Joe Swift makes the case for his Golden Jubilee plant, the one he thinks has had the most impact on British gardens over the last half-century.