1. There’s still time to direct sow some annuals like Cerinthe, Nasturtium, Nigella and Calendula for late flowering. Remember to thin out once germinated for decent size flowers.
2. Lily beetles are rife this year so be vigilant as they can devastate in no time (and they enjoy fritillaries too).
Continue reading Pat’s 10 jobs for June 20261. If you can brave the cold and wet it’s time to winter prune that Wisteria by cutting back all long whippy branches to within two buds of the main framework, so you can shape the plant for flowering.
More information on Wisteria pruning, including a video, from the RHS.
2. Any form of mulch is good on the soil now, in the form of your own homemade or bought compost, or even leaf mould if you have it. If you can’t face lightly forking it in, the worms will do it for you.
1. You can start planting tulips now, either in pots or in the ground. The deeper they are planted in the ground the more chance there is of them reappearing next year – but do protect them well from squirrels who love to eat them.
2. It’s not too late to plant Narcissus and other bulbs like Allium, but again as deep as you can if planting in the ground as squirrels do love to lunch on Allium.
1. Salvias are flowering their hearts out now but make sure you have some cuttings on stand by to cover any winter losses. And remember that quite a few are tender and will need winter protection in the colder months.
2. Last year I dug up my Dahlia tubers and potted them up once they had died down but lost quite a few despite keeping them frost free. So this time I will try leaving some in the ground and giving them a thick mulch. Of course, the problem then is trying to protect the new growth in spring from slugs and snails, so they’ll need keeping an eye on.
1. Border irises are really doing their thing now and the show can be brief but make sure to keep the soil around their roots free of weeds so their rhizomes can bake a bit in the sun.
2. Time to Chelsea chop your tall perennials to stop them flopping later or to extend flowering. Good candidates are Phlox, Penstemon, Helianthus, Sedum/Hylotelephium – and I include vigorous Clematis too. You can either do the whole plant at once or just some stems to extend flowering, although it may result in smaller flowers.
3. Deadhead displays of pot plants like Violas to keep them flowering and stop them going to seed. Remember to give them a feed to keep the display going.
Charlton and Blackheath Amateur Horticultural Society 