Seed Needs, Red Yarrow (Achillea millefolium rubra) 500 Seeds Quality Red Yarrow seeds packaged by Seed Needs. Intended for the current and the following growing season. Packets are 3.25" wide by 4.50" tall and come with a full colored illustration on the front side, as well as detailed sowing instructions on the reverse. Red Yarrow will produce clusters of ruby red to deep magenta colored flowers. Mature plants will reach a height of about 12 to 30 inches tall and will spread 18 to 24 inches wide. Red Yarrow flowers are known to attract an array of beneficial insects, such as: butterflies, bumblebees, ladybugs and hummingbirds. Yarrow plants will form single stems that branch off into smaller stems. Each smaller stem can develop clusters of flowers, ranging anywhere from 15 to 50 blooms per cluster. All Red Yarrow seeds sold by Seed Needs are Non-GMO based seed products and are intended for the current & the following growing season. All seeds are produced from open pollinated plants, stored in a temperature controlled facility and constantly moved out due to popularity.