penstemon - Knowledgebase Question

bemidji, mn
Avatar for sneumann65
Question by sneumann65
September 3, 2007
I recently purchased a plant with both yellow and deep purple flowers. The yellow is an allamanda & (thanks to you) I realize now that the purple is a penstemon. Is it a good idea to keep these plants in the same container or should I separate them? I'll bring them in the house when it gets cold.

Answer from NGA
September 3, 2007
Your allamanda is native to Brazil so it won't do well outdoors during your cold winters. The plant will appreciate being grown inside. Begin by taking it indoors at night when nighttime temperatures are about 50F, and then taking it back outdoors for a few hours each day, eventually keeping it indoors 24 hours a day. This will lessen the shock of being indoors.

The penstemon is probably just a hitchhiker. These two plants are rarely planted together in a container; I wonder if it is a volunteer and the garden staff thought it made an attractive combination? In any event, I'd remove it and pot it up on it's own. Penstemon can be persistent in the garden and somewhat invasive if left unattended so you might want to keep it in a container rather than plant it in your garden.

Best wishes with your garden!

You must be signed in before you can post questions or answers. Click here to join!

« Return to the Garden Knowledgebase Homepage

Member Login:

( No account? Join now! )

Today's site banner is by Paul2032 and is called "Echinacea"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.