What is the one flower that the Monarch’s always flock too? Mexican Sunflowers! What is the only plant monarch caterpillars eat? Milkweed! If you want to see the magic of monarchs in your garden, I have put together a butterfly starter kit. The starter kit comes with one Mexican Sunflower seedling and one milkweed seedling. You can attract them with the sunflower AND provide the monarch caterpillars a source for food. A full grown Mexican Sunflower will be approximately 5 feet wide and 6 feet tall, so pick a sunny spot in your garden that has plenty of room for this beauty to grow. Pick up at our location or delivery available.