Ask a Question forum→Penstemon problem.

Views: 405, Replies: 3 » Jump to the end
Name: Lola
Keeps Sheep Roses Cottage Gardener Garden Photography Birds Farmer
Oct 18, 2019 7:47 PM CST
Why do the majority of the penstemons I own turn brown, brittle, and die like this? I have taken cuttings and some live a year before dying while others live for years without any dieback. Should I be treating them like annuals and getting rid of them the moment they shown signs of dying off?
Thumb of 2019-10-19/LolaTasmania/221236

Name: one-eye-luke US.Vet.
Texas (Zone 8a)
Quitter's never Win
Hummingbirder Birds Organic Gardener Dog Lover Cat Lover
Oct 19, 2019 2:29 AM CST
The keys to successfully growing Penstemon include: Planting them into "lean" (infertile) fast draining non-clay soils. Sandy or gravelly soils are ideal for growing Penstemon, however heavy clay soils cause problems with drainage. If you are growing in clay, I suggest you amend the soil with peat to obtain more drainage.
NOT A EXPERT! Just a grow worm! I never met a plant I didn’t love.✌
Name: Rick R.
Minneapolis, MN, USA zone 4
I was one of the first 300 contributors to the plant database! Garden Sages The WITWIT Badge Garden Photography Region: Minnesota Hybridizer
Seed Starter Plant Identifier Million Pollinator Garden Challenge
Oct 19, 2019 1:28 PM CST
What oneeyeluke says is generally true. If your soil is clay based and/or fertile, try Penstemon hirsutus, Penstemon cobaea or some of the related hybrids, like Huskers Red. Those with eastern North American parentage are better adapted.
When the debate is lost, slander becomes the tool of the losers. - Socrates

Oct 20, 2019 6:02 AM CST
According to the lady who wrote The Well-Tended Perennial, penstemons are are short lived plant. That helped alleviate some of the heartache I felt when I would lose one. I have a beautiful coral-colored one that has come back for a couple of years now. I'm going to keep my fingers crossed and use some of the suggestions given as I have very clay soil.

« Homepage
« Back to the top
« Forums List
« Ask a Question forum
Only the members of the Members group may reply to this thread.

Member Login:

[ Join now ]

Today's site banner is by Lucius93 and is called "Aronia melanocarpa"

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