When growing conditions are ideal, Dutch iris will come back to bloom a second year.
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In colder areas you will not see any foliage until spring.įeel free to cut the flower stems for bouquets, leaving the foliage behind. In warm climates, Dutch iris may start producing foliage in late fall or early winter. For an impressive show, plant about a dozen bulbs per square foot. Planting Tips: Like most bulbs, Dutch iris look best planted in groups. Plant the bulbs with the pointy end up, approximately 5” deep and 4” apart. To help improve drainage, you can mix in a little peat moss or compost. For best results, plant the bulbs within a month after receiving them.ĭepth and Spacing: Dig a 6" to 8” deep hole. When to Plant: Dutch iris are planted in the fall, at the same time as tulips and daffodils. They also combine beautifully with other early summer flowers and flowering shrubs. Their dramatic blossoms and long, straight stems are easy to arrange and last a long time in bouquets. Sturdy stems keep the flowers standing tall and make it easy to admire the delicate beauty of the blossoms.Ĭutting Gardens: Dutch iris are one of the world’s most popular florist flowers.
If the soil stays moist and cool, you should expect to treat your Dutch iris as annuals.Ĭontainers: Dutch iris look great in containers – on their own or mixed with other plants to create a living bouquet. If the soil in your perennial garden gets hot and dry during the summer months, the bulbs may perennialize. Perennial Gardens: Dutch iris stand 18 to 24” tall, so they are a perfect height for the middle of a perennial border. If you want to encourage the bulbs to perennialize, choose a planting location where the soil will be hot and dry during the summer months. Soil Conditions: Dutch iris require well-drained soil. If you don’t know your growing zone, please check the USDA Hardiness Zone Map here. Hardiness Zone: The bulbs are winter hardy in zones 5-9.
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Sun/Shade: Dutch iris perform best when they are planted in full sun, but they will also grow in part shade. Longfield Gardens supplies top size, 7/8 cm Dutch iris bulbs so you can enjoy the biggest, brightest blooms. Bigger bulbs (like the one on the far left) contain more stored food energy, which means they will produce a stronger plant with more impressive flowers. When you compare two Dutch iris bulbs side by side, it’s easy to see differences in quality.
Unlike other types of iris that grow from thickened roots called rhizomes, Dutch iris grow from teardrop-shaped bulbs that are planted in fall. Dutch iris are popular with floral designers as well as gardeners, because they are long-lasting and easy to arrange in a vase. Flower colors range from pale blue and lemon through deep purple, bronze, rose and gold. Dutch iris, also known as Iris hollandica, have orchid-like flowers with silky petals.