24+ Blue Porterweed, Stachytarpheta Urticifolia, Seeds Butterfly Garden Favorite You are buying 24+ Seeds of Blue Porterweed (Porter Weed, (Stachytarpheta urticifolia), plus germination and care instructions, including a color photo for seedling id. These are fresh seeds which I have planted with EXCELLENT germination results. "Blue" Porterweed actually has flowers that are a violet-purple and, although small, they attract all sizes and types of butterflies to their sweet nectar. This is a must have in your butterfly garden! Growing to about 4' high, it can be grown as a self-sowing annual in colder zones or as a perennial in zones 9-11; they also can be grown in containers (will need about a 3 gallon pot at maturity). These do drop a lot of seeds, so some thinning of 'volunteers' each year will be necessary, but the butterflies will love you for your effort! These bloom continuously throughout the summer until hit by a frost. Our seeds/bulbs are guaranteed to be fresh but are NOT guaranteed as to results. Sorry, but there are too many variables in gardening that can impact germination. Flower seeds/bulbs are a live organism. Their germination depends on many factor including heat, cooling, sun, shade, moisture, time of sowing, etc. None of these things We can control so We can not be held responsible for them. So please do not ask for a refund, replacement or to return unused seeds/bulbs.