Plant Indian Milkweed Seeds to Help Save the Monarch Butterflies - Eriocarpa California Indian Milkweed Eroipcarpa is Drought Tolerant and Grows up and down California 3 Feet Tall with Pink Flowers and Silver Foliage. Perennial and Drought Tolerant Tolerates Clay Soil. Large Seeds .03 Oz. Great for Bird and Butterfly Gardens. Marde Ross & Company has been a Licensed California Nursery since 1985.