TypesWild Wild Flowers: Astrantias – prefer shade and grow in zones 4-9 – Ht. depends on the species 2-3… July 20, 2018 0 2427 Wild Flowers : Astrantias – prefer shade and grow in zones 4-9 – Ht. depends on the species 2-3' – Slugs don't like Astrantias so inter-planting them among your other shade plants tends to repel them.