Posts Tagged ‘climber’

RHS award winners: Essential climbers

January 5th, 2018 | Plant Talk with Graham Rice | 0 Comments

Ipomoea 'Heavenly Blue' and Mina lobata

The new collaboration between Mr F and the Royal Horticultural Society (RHS) features seeds of flowers and veggies that have been awarded the prestigious Award of Garden Merit (AGM). I discussed these new ranges briefly here last year but I thought, as seed sowing season approaches, I’d take a closer look at some of the floral highlights. And the ipomoeas are especially interesting.

There are two AGM ipomoeas in the Mr F catalogue and, at first sight, they look completely unrelated.

Mina lobata (above right) features in the RHS range and, although long known by that name, it’s now been recognised as so similar to ipomoeas that it needs to be classified as one: so it’s now known, botanically, as Ipomoea lobata.

Fiery orange buds are held along arching stems, maturing to yellow and then cream but even as they pass their peak the new flare and the flowers stay tubular. It makes a great deal of growth, reaches 1-8-2.4m depending on the richness of the soil and the watering, and needs stout support. It flowers for months. Sow in frost free conditions from April.

The closely related Ipomoea ‘Heavenly Blue’ (above left) is also an AGM variety but has been listed for years so is not in the new RHS range. It’s very different, with large flared sky blue flowers that open early in the day and close by afternoon – which is why it’s called morning glory. It reaches the same height as Mina lobata but its growth is less bushy and dense. It’s one of the most beautiful of garden climbers, no garden should be without it.

Just to emphasise how varied the ipomoeas are, Mr F also lists two special varieties of sweet potato grown for their coloured foliage; they’re ideal in sunny containers and trail neatly. These foliage varieties of Ipomoea batatas do not have AGMs – but I suspect this is only because the RHS has not yet held a trial.

I think these varied ipomoeas deserve a try, don’t you? I’ll be growing them all this year.