- You Will Get 1200 Seeds Of Lemon Mint Attract Hummingbirds Purple Flower Seeds. - Watering: Medium. - Sunlight: Partial Shade, Full Sun. - Soil pH: Neutral. - Soil Type: Loam. - USDA Hardiness Zone (°F): 1 (< -50 °F). - Annual. - Purple, Lavender, White. - 1 to 3 ft tall. - Sun or part shade. - Produces lovely bloom spikes at top of plant from spring to summer. - Easy to grow in about any soil, and is drought tolerant. - Flowers are great in cut arrangements, or can be dried as well. - Crushed leaves have a sweet citrus aroma, attracts hummers, butterflies, and moths. - It is a member of the mint family, also called purple horsemint. - Comes with planting instructions, but refer back to listing for the following details: Use peaty soil. - Can take up to 40 days to germinate. - Germinates best 60-70 degrees during day but with cool nights.