It does not seem to be anywhere near as cold sensitive as quamoclit or any other Ipomoea for that matter and I've even had seedlings pop up in the garden here in Torbay after mild winter. Ipomoea lobata grows relatively easily in the UK and will flower in dappled shade, although it performs best in full sun. quamoclit, which has very finely divided, feathery leaves and scarlet flowers that flare at the tips. It is a more vigorous and easily grown plant than I. The former has broad, lobed, typically Ipomoea-like leaves and one-sided spikes of tubular flower with somewhat inflated bases that are white going to yellow with reddish-range at the tips - hence the common name 'Spanish Flag' or 'Fire-cracker vine'. Some folks tar the entire family with the same brush and forget or are unaware that true Ipomoea is tender to very tender in the UK and incapable of becoming a 'weed' in any sense of the word.įlora, Ipomoea lobata is a different species to I. I think the confusion about the alleged 'rampancy' of Ipomoea lies with it being distantly related to our common, native bindweed - Calystegia sepium, which is a terribly pest in the wrong place. I would certainly grow this on for several weeks under cover before planting it outside in late May or early June. The most reliable is the relatively old hybrid: 'Heavenly Blue', but there are some newer, fabulous colours.Īs to growing the 'Star Vine' or 'Cypress Vine' - Ipomoea quamoclit, it is even more sensitive to cold temperatures when young and needs a very warm sunny spot to really get going. In more northern parts of the UK they are best protected until early to mid June and in a cool summer, may not succeed at all. Should low temperatures persist for any length of time, they give up completely and die. young plants develop pale or creamy blotches on the leaves and all but stop growing. True Ipomoeas ('Morning Glory')are tropical plants that are very sensitive to cool temperatures.
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