Pro­tect slightly ten­der peren­ni­als

Garden Answers (UK) - - What To Do This Month... -

Some herba­ceous peren­ni­als such as pen­ste­mons, salvias, Ver­bena rigida, gaura and al­stroe­me­ria are bor­der­line hardy (they’ll sur­vive a mild win­ter but may be killed off if it gets colder).

1

Take in­sur­ance cut­tings... Tak­ing cut­tings in early au­tumn will en­sure you have plants next spring, or you can lift plants and pot up into con­tain­ers that can be brought un­der cover.

2

...Or mulch the plants Another op­tion is to mulch these plants now with a thick layer of chipped bark around the base to pro­tect the plant from sharp frosts.

3

Don’t cut them back Leave any fo­liage in place be­cause this will pro­vide pro­tec­tion for the crown of the plant and the roots be­low ground.

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