I've got some G. madarense 'guernsey white ' seedlings coming on,do you think it would be better to pot them on into bigger pots to over winter, or would they survive outside in my gravel garden? At a gardens near us (well at-room really) they have a huge plant in their gravel garden,so I'm hoping that mine would be o.k. Any advice?
mark Antrim, Northern Ire United Kingdom (Zone 8b)
The trick with Maderense Sue is to get them as big as possible before the hard winter comes in as they will survive better than the small ones. My guernsey white seedlings germinated back in April and are now in 8 inch pots. I will be moving them to 15 inch pots very shortly.