THE HAPPY BEAUTY of ‘Heavenly Blue’ morning glory (Ipomoea tricolor) really is unequalled. Its vines curl along the deck railing outside our living room window, delivering the day’s bouquet of fresh, delicate trumpets of the clearest sky blue, throats awash in crayon yellow.
By evening, the flowers will curl and fade in a lugubrious salute to the failing light. But tomorrow morning, a new set of trumpets will sound their cheery voluntary. What a wonderful greeting before you’ve even had your coffee.
But this plant can also be a disappointment, failing to flower, growing rank and weedy, reseeding itself where it’s not wanted and sometimes even failing to germinate.
Okay, so this tender beauty needs to be pampered, right? No, not really. When conditions are right, it could be the…