3) Campanula, Codonopsis, Edrianthus, and other Campanulaceae

I picked up a Campanula piperi in Santa Fe and I'm amazed at the lack of information on the web about growing this plant. How do I grow this in New England?

Hello, I picked this up at a local garden center yesterday.  It seems to be a new hybrid circulating in the plant trade.  "Propagation prohibited" says the label.  An internet search says it's a C. rotundifolia hybrid, not much else .

I grew plants from seed for "Phyteuma vagneri" from the 2011/2012 seed exchange (both last year and this year). Last year's plants are now blooming, and it's pretty obvious that they are not P. vagneri (at least, not if the image here: http://www.flickr.com/photos/30234930@N08/4854181933/ (among others) is a good representation of the species. My plants look more like the P. scheuchzeri and P. orbiculare that I've grown previously (I no longer have them, so cannot compare them directly).

I picked up a rather sizable Phyteuma vagneri at our Chapter plant sale (brought by Harold Peachey) and I without a clue about what to do with it. I've grown one or two small Phyteumas in the past, but this one is new to me. Any cultivation experience?

I was told that Edraianthus do well here, and in my (albeit) brief experience with them, that seems to be true.

Edraianthus serbicus is a very showy one. Here's a plant in its second year from seed. Seeds were collected by M. Pavelka in the Konavska Hills, Bulgaria at 1400m elevation. Germination was straightforward and easy, with no seed treatment (e.g. stratification, scarification, GA-3) required; the seeds germinated at room temperature after about 10 days.

Campanula topaliana ssp. delphica in cultivation in Lancashire, UK.

(Edited re. spelling of species name. :))

A flat of Physoplexis comosa:

Closeup:

Campanula choruhensis is a low-growing rock plant from Turkey with large, beautifully shaped white flowers in midsummer.  

Here is the closely related C. betulifolia:

This is a beautiful little bellflower with a cascading habit. It is native to the mountains of Croatia and adjoining areas.

I sowed the seed on 12/20/08, and the photo was taken on 8/9/09.

An ubiquitous species of the meadows, ridges and boulder fields in the Italian Dolomites this superb campanula can be found in a range of hues from white through to dark blue.