Mums

Beyond the front porch

A pair of mums either side of the steps is the default, and there is nothing wrong with it. But a mum is a perennial chrysanthemum that has been grown hard for one season of flower, and it does more than guard a doorway.

• In a bed, three of one color, planted in a drift, reads as a designed border rather than a holiday.
• In a mixed container, one mum plus a kale, a few pansies and a trailing ivy carries from October through a frost.
• Massed along a walk, alternating two colors, gives you the effect a nursery display has and costs the price of six plants.

Buy in odd numbers and repeat a color rather than collecting one of each. A grouping of three purples with one orange looks intentional; one of every color looks like a sample rack.

Keeping them alive in the pot

Mums in bloom drink more than anything else on the porch. A full-flowered plant in a 9-inch pot on a breezy October day can want water every single morning — and the first sign of thirst is not a wilt, it is a whole plant gone limp at once.

Push a finger into the soil each morning. Water at the base, not over the flowers, which shortens the bloom.

Planting them out

If you want the plant again next year, get it in the ground rather than leaving it in the pot. Plant it as soon as you buy it, not after it finishes — roots need time before the ground cools.

Sun, decent drainage, and do not cut it back until spring; the old stems protect the crown through winter. Come March, cut the dead growth to a few inches and pinch the new shoots back once or twice before July to keep it compact.

Some come back beautifully. Some do not make it through a wet winter in heavy clay. Either way you had the fall out of it.