Perennials with autumn foliage colour changes.

[Hoy]

Whether plants develop nice fall colours depends on many factors. Among them are temperature, light and soil conditions.

Where I live at the S W coast of Norway plants rarely get other fall colours than yellow and brown. In the mountains however the same species get much more vivid colours.

Rubus saxatilis



Potentilla erecta



Arctous alpina and Vaccinium spp



Salix herbacea



Chamaenerion angustifolium

[Hoy]

Geranium sylvaticum




Athyrium distentifolium




Cornus suecica

[Véronique Macrelle]

Athyrium distentifolium  and Cornus suecica are beautiful

[Véronique Macrelle]

I liked this discussion and I read it again with pleasure.
 but i wondered about syneilesis.
 mine doesn't do autumn colour as it usually disappears in summer... too dry?


So, as I found a Syneilesis palmata on a plant festival (really difficult to find as a plant and even more difficult to find viable seeds) I planted it in the shade with a more humid soil... what are your growing conditions?

can they really last until autumn if they are cooler?