I live in a city where hollyhocks abound, even in sidewalk cracks. I cannot get them to grow. I have sown them in the fall. I have transplanted little seedlings in the spring. Some seedlings come up and grow a bit but do not thrive. Can you suggest anything which will help me grow these perfidious plants?
Sometimes "wild flower" that anybody can grow can be the hardest. This article should give you a few tips : https://www.gardeningknowhow.com/ornamental/flowers/hollyhock/tips-on-hollyhocks-growing-hollyhocks-successfully.htm