- You Will Get 50 Seeds Of Flowering Kale Songbird Mix Flower Seeds. - Watering: Medium. - Flowering Kale Seeds the Songbird series is a great fall and winter crop that is very showy has bright tight ruffle heads on it. - This variety is a nice hybrid with a very tight double bloom on top, plant will get 8” to 12” tall and spread about 12” to 14” this will look good even when there is snow on the ground they have been know to grown in zone 4-8 for 2 to 3 years. - This is for 50 seeds this is often times call flowering cabbage also.