Question:  I am purchasing pots of grasses for our seaside home. When can we plant them outside? Answer: Jonathan Foster, Home Horticulture Outreach Professional The estimated last frost date for your town is May 2 this year, so you’re very likely to be fine planting then. I will note, for full disclosure, that these dates can’t be read more I am purchasing pots of grasses for our seaside home. When can we plant them outside?