If you want an real everlasting flowers then you should try growing strawflowers! They grow really well from seed for me here in zone 9. And the pollinators love them too! They dry so beautifully and How to Plant, Grow and Care For Spider Plants Bulk Four O'Clock Seeds Bicolor Mix Bulk Wildflowers 1 4 Pound Solidago velutina ssp. californica, California Goldenrod Larner Seeds What to Seed Outside in June Lifehacker DIY Succulent Planter Clever Bloom