Crocuses are planted 5 inches deep in lawns to provide early color. Check the depth before aerating if the bulbs were planted by someone else. Core aeration machines typically extract a plug that is 1-6 inches deep. Choosing a core aeration machine with a shallower extraction depth than 4 inches will help prevent damage to your crocus bulbs.
About this Author
Marie Notnats enjoys learning about new topics and teaching people new skills. She has been writing professionally since 2008. She is a professional horticulturist with a Bachelor of Science degree in horticulture from Brigham Young University. She writes for About.com, Examiner.com, eHow, and assorted gardening blogs.