A mixture of caterpillar host plants and butterfly nectar plants will ensure that many butterflies visit your window box.
There are a lot of easy-growing, sun-loving flowers that butterflies love. Here's a wonderful combination for an 18-inch-long window box.
A: Verbena 'Aztec Purple' -- 1
B: Parsley (Petroselenium crispum) -- 4
C: Zinnia 'Profusion White' -- 2
D: Pentas 'New Look White' -- 1
E: Lantana 'Landmark Gold' -- 3
F: Calibrachoa 'Cabaret Purple' -- 2
Learn more about these plants.