Sunday 27th July 2025 – Open Garden and Plant Sales from 11.30am until 5pm to see the National Collection of Penstemon at Froggery Cottage, Kettering, Northamptonshire, NN14 2PT. Open garden, plant sales and refreshments, in support of local charities. This plant sale includes a good selection of Penstemons, including rare varieties. For all the details, please click here.