Shop › Hosta 'Krossa Regal' Image 1 of 1 Hosta 'Krossa Regal' £9.00 Giant Hosta. Ht 90cm. Upright frosty blue grey leaves, with a wavy edge. Lavender flowers. Sun tolerant. Krossa 1980. Quantity: Purchase Added! Giant Hosta. Ht 90cm. Upright frosty blue grey leaves, with a wavy edge. Lavender flowers. Sun tolerant. Krossa 1980.