Probably safe to plant flowers and tomatoes in Pennsylvania around Mother’s Day
Southcentral Pennsylvania gardeners typically use Mother’s Day weekend — specifically May 11 — as the benchmark for when tender annuals and warm-weather vegetables can go outdoors.
The upcoming Mother’s Day weekend — or, more specifically, May 11 — is the milestone that southcentral Pennsylvania gardeners usually use to determine when it’s “safe” to plant the new season’s cold-wimpy summer flowers and warm-weather veggies, such as tomatoes and peppers.