Bailey Nurseries in St. Paul roots over 9 million cuttings every year. This includes a portion grown from tissue culture. These micro-cuttings started in January are the Syringa vulgaris hybrids (frequently called the French hybrids lilacs). These micro-cuttings lilacs are shipped to Minnesota from a tissue culture laboratory in Oregon.Minnesota in winter is not the ideal place to root micro-cuttings in a greenhouse. Cold temperatures, low humidity, and low light conditions make rooting cuttings a real challenge. The current method, which uses small tents to better control the environment, yields variable results, and the cuttings require a lot of labor to maintain.
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