when can I move foxglove plants that are self-seeded and, at the moment, small plants?
The large foxgloves have shed seeds which have grown into small plants. Can I move them now? I don't have a photo.
Success with transplanting depends on the size of the plant and weather. I would not transplant anything less than 4 inches in size. You can move smaller plants but they will need very close monitoring since their roots are immature. With weather, cool and cloudy weather are ideal - less stressful for the plant. The August sun is still strong when shining directly on a plant. Rig up shade for new transplants for 3-5 days. Anything that shades the plant from afternoon sun is fine - an umbrella, old bedsheet, box or paper leaf bag over a shovel or pole. When the plant has recovered from being moved, try removing the shade. If the plant wilts in the sun, it is not ready to be in full sun. There is plenty of time for transplants to settle before winter if moved in Sept to early Oct. The 7-10 day weather forecast should guide your timing.