About Ornamental Poppy Plants. Hardy in USDA zones 3 through 9, orientalpoppies are herbaceous perennials that bloom in spring and early summer. They have bluish green foliage that is hairy, thistle-like, and sometimes silvery. How to Get OrientalPoppies to Bloom#. Orientalpoppiesnotblooming could have several reasons. The easiest one to rule out is whether they are getting insufficient sunlight. Orientalpoppies need full sun to bloom. The soil might be lacking phosphorus, which promotes flowering. Do Orientalpoppies rebloom? They can establish their roots and get the winter chilling they need to bloom the following spring. Spring planted OrientalPoppies often will notbloom until the following year. Orientalpoppies produce foliage well before they come into bloom, and some bloom a bit earlier in the season than others. If this is a new plant, it may take a year or two for it to settle in and bloom, with the clump producing more and more flowers each year. Orientalpoppies are tall plants that feature enormously decorative blooms, of which gardeners deserve to be justifiably proud. Often, they are a brilliant scarlet and a focal,point for the entire garden. So, if they fail to bloom, their lack of an appearance makes for a sad garden indeed. Orientalpoppiesbloom in late spring to early summer, typically May to June. Their showy flowers last for a short period—often just one to two weeks—before the foliage dies back in midsummer. This dieback is not a sign of disease but part of the plant’s natural dormancy cycle. OrientalPoppies are reliable perennial types, typically bursting into bloom in late spring to early summer. Their large flowers usually appear from late May through June, depending on the region’s temperature. A: OrientalPoppy seeds are viable but the resulting flowers may not be identical to the mother plant.A: The Aglaya OrientalPoppy will grow foliage about 6 weeks after planting. It will bloom the second year. OrientalPoppies die back and go dormant after their blooming period, so there will be bare spots in the garden once they die back. Plant similar, longer-lasting blooms and pants among the poppies. Do orientalpoppiesbloom the first year?Fall is the best time to plant OrientalPoppies. They can establish their roots and get the winter chilling they need to bloom the following spring. Spring planted OrientalPoppies often will notbloom until the following year. Do animals eat poppies? Before purchasing Orientalpoppies, there are several key considerations to keep in mind. The early summer blooms unfortunately do not last very long . They typically appear for about two to three weeks during early summer, though it may rebloom in late summer. Planting orientalpoppy is not as easy as it seems. Here’s why: orientalpoppy are not able to survive frost or cold weather under 50 degrees Fahrenheit. So if you plant them outside too early in the fall they will die. And if you plant them too late, your orientalpoppy won’t produce a bloom. No OrientalPoppy Flowers – Reasons For OrientalPoppiesNotBlooming.Orientalpoppies are long-lived and easy to grow perennials, but they don't behave quite like other garden plants. Read on to find out what you need to know to grow and enjoy Orientalpoppies in your garden. Outdoor Poppy Culture. Poppies of all varieties are cool-weather plants that bloom in late spring and early summer when temperatures are mild. Sow seeds or plant poppy seedlings in well-drained, evenly moist soil in full sunlight -- at least six hours a day, though 12 hours is ideal.