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Author Topic: Ptilostemon afer  (Read 1210 times)

Palustris

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Ptilostemon afer
« on: August 17, 2015, 04:17:37 PM »
Anyone grown this biennial thistle? If so when did you sow the seeds? TIA.

Maggi Young

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Re: Ptilostemon afer
« Reply #1 on: August 17, 2015, 05:22:25 PM »
These thistley things are best sown fresh, I think  - so I'd sow now. 
Margaret Young in Aberdeen, North East Scotland Zone 7 -ish!

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Rick R.

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Re: Ptilostemon afer
« Reply #2 on: August 18, 2015, 12:50:57 AM »
I sprouted my first seeds from the NARGS seed ex in 2011.  Planted in May, the first ones emerged in 9 days.  Seeds were not moist packed, and about half of the seeds germinated.  Since then, I've let them self-sow in the garden.  Seedlings emerge sporadically through the spring.
Rick Rodich
just west of Minneapolis, Minnesota, USA
USDA zone 4, annual precipitation ~24in/61cm

Palustris

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Re: Ptilostemon afer
« Reply #3 on: August 18, 2015, 09:58:56 AM »
Thank-you. I am a bit reluctant to allow them to self seed, they are a bit prickly to weed out!
I have sown some now and I will save seed and sow in May as well.

 


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