The Hopkinton Garden Club’s Online Speaker Series presents “Healthy Lawns and Lawn Alternatives” with Gretel Anspach, a trustee of the Massachusetts Horticultural Society, a lifetime master gardener with the Massachusetts Master Gardener Association, and a recently retired systems engineer for Raytheon. The presentation will be held on Tuesday, April 19, at 7:30 p.m. on Zoom. This event is free and open to the public. Non-members are asked to preregister at register@hopkintongardenclub.org and state their interest in attending. Instructions will be sent prior to the event. Visit hopkintongardenclub.org for more information.