Summer evenings in the Southern U.S. are full of sounds -- cicadas, crickets, tree frogs, with an occasional late katydid. The crickets and tree frogs are melodious; the cicadas produce a harsh whirring sound, hard to describe. The evening light is a deep purple now turning a peach-apricot color, with clouds hinting of a good chance of thunderstorms. The last two evening's 'isolated' thunderstorms passed us by, so hopefully we'll get more than a few drops tonight. The clouds look thick on the weather radar. It was a good day in the garden. I put extra lime in the bed near the breakfast room, to make the midwestern Penstemons from yesterday's foray seem more at home. One of them was labeled Penstemon 'Sour Grapes'. The nursery owner told me it was Penstemon cobea, an adaptable plant of limestone glades and outcrops from Central Texas north to Missouri. An Internet search suggested, however, that P. 'Sour Grapes' is of hybrid origin, possibly...
