Wintering Plumbago in zone 3 - Knowledgebase Question

Detroit Lakes, MN
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Question by ziggy61
November 9, 2005
What is your recommend wintering Plumbago in zone 3? I have them potted in large planters. A fellow told me they could be wintered in the pots indoors?

They are just big and beautiful. Would I need to cut them down?

Thank you.

Answer from NGA
November 9, 2005
Commonly known as leadwort, Plumbago harks from warm areas like South Africa and Southeast Asia. It adores full sun, well-draining sandy soil, and requires little water once established (a bit more if grown in a pot). Bearing an abundance of blue phlox-like blooms from spring through fall, it?s a carefree plant whose main need is regular pruning to encourage bushiness and keep its vigorous growth in check. In late winter or early spring, prune away 1/3 to 1/2 of the shrub. For gardeners in cold climates, incorporate pruning into the overwintering process, which starts in late fall. Just before the first fall frost or when the plant shows the first sign of cold damage or dieback, bring it indoors. Prune the entire plant back by at least half and store it in a frost-free but cool basement or garage. If possible, place it near a window so it receives some light. Water just enough to keep it from drying out. In March, move the plant to a warmer, brighter spot indoors, increase watering, and begin feeding it with an all-purpose liquid fertilizer. Gradually introduce it to the outdoors once spring frosts are gone for good.

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