It’s that time of year when thoughts turn to seed sowing, or at least to sorting out the seed packets and checking what needs to be dealt with when. There are visions, too, of new planting schemes – as in trying to remember where things are in the garden. With some plants you never do know. The Welsh poppies are complete vagabonds and can pitch up in the most unlikely quarters. Likewise the dandelions, the little gate-crashers. Needless to say, the garden must have plenty of yellow. Got to keep the bees, bugs and butterflies well fed. In the meantime, here’s a reprise of some of last summer’s best yellows.