All of ours revel in light shade and are grown under small deciduous trees here. A well-drained soil, leaf- or humus-enriched soil is all that they need. Annual incorporation of additional organic matter is of benefit. They are not difficult but as with most Ranunculaceae, they like time to settle and seldom give their best in the season after disturbance.
They start into growth very early and can be something of a problem to move in spring as they are usually in flower when sent. We now also offer them for ordering from June onwards, for LATE Autumn despatch, when they travel more safely and establish more reliably.
Many of our customers prefer them in spring, but do be aware that they establish less well then and you will miss the flowers. We strongly recommend that you buy them for delivery in LATE Autumn, when they will give better results.
You can order these any time they are listed but they are VERY LATE RIPENING, November Delivery is normal. Customers in cold countries should be aware of this. There are more details here.