10 Tips for Growing Daylilies. If you are a gardener on a budget, daylilies are one of the best plants you can grow. A small investment in daylilies will give you blooms for many years to come, and these quick growing plants can fill your yard up fast. Daylilies are fairly simple to grow too. Look below at some helpful tips for growing daylilies, and see why this is a plant you should add to your yard this year!