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One October day, T.C. asked, "Have you ever seen a daisy grow like this?"
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That's a Montauk daisy (Nipponanthemum nipponicum, hardy in zones 5-9). It's actually a deer resistant, three-foot woody shrub we treat like an herbaceous perennial. That is, even though the aerial parts might survive winter and sprout new growth from the branches, we cut them way back to nothing every spring. This doesn't affect bloom but does keep them dense and not so sprawly. It can also help their form to be pinched, so they will be low and dense in bloom. Simply shear them in late spring, shortening the plant by one-third as you would in pinching a traditional mum.
Although they're hardy to zone 5 we use them most in gardens that are zone 6 or warmer, where they can shine alongside many late bloomers. In zone 5 Michigan gardens their flowers come so late they may go unnoticed-- coming after many viewers have bundled up and moved indoors. Wherever they bloom, it's important to place them with other fall stars so their show won't be wasted among tattered, long-spent species.
Some people who grow them have balked at our direction to cut them back to the ground each spring. "No!" They say, "we can't do that, it will kill them." Or they say, "Okay, we'll cut them but we're afraid so we'll cut them to 6 inches or 12 inches tall" which means they may be ugly all summer, with bare woody ankles creating a distraction in borders otherwise lush and green. Worse, the previous years' stems may die back and all the new growth from the base won't cover that dead wood until mid- or late summer.