Scottish Rock Garden Club Forum

General Subjects => Alpines => Topic started by: P. Kohn on July 19, 2016, 02:56:33 PM

Title: Crepis incana
Post by: P. Kohn on July 19, 2016, 02:56:33 PM

Our plant of Crepis incana has really thrived on our Cornish wall and we are wondering about propagation. I know that there was a discussion three years ago on the forum when Lesley Cox suggested that only the Thuja Alpine Nursery was a source of viable seeds. Has anything changed ?  Is it possible to divide the plant ?

Title: Re: Crepis incana
Post by: Palustris on July 19, 2016, 05:46:19 PM

Since it is like a Dandelion, it will grow from pieces of root quite easily.

Title: Re: Crepis incana
Post by: David Nicholson on July 19, 2016, 06:57:03 PM

From "The Propagation of Alpines" by Lawrence D Hills (1959) in respect of Crepis incana:-

"Sow March., normal soil, ready to pot May, can be planted September. Alkso increased by division in April., direct replanting........"

Title: Re: Crepis incana
Post by: majallison on July 19, 2016, 10:11:31 PM

I think you can take the root cuttings at pretty much any time of year ~ they get going rather faster at this time of year than if you take them in winter...

Title: Re: Crepis incana
Post by: P. Kohn on July 20, 2016, 08:11:19 AM

So root cuttings is the method of choice ?  Reluctant to disturb our plant whilst it is in full flower and the weather is so hot. Advice about seed sowing presupposes a source of viable seeds. Has anyone found a reliable seed source ?  Jelitto offer Crepis pyrenaica but not Crepis incana.