Hyacinths look fabulous in containers, either on their own or combined with other spring bulbs such as daffodils and early tulips. After your hyacinths have bloomed, remove the faded flower spikes and allow the foliage to die back. Dig up the bulbs, discard any damaged or diseased ones, and then dry them and store in paper sacks before. After 8 to 12 weeks of blooming, your hyacinth will begin to go dormant. First the flowers will die, and eventually the leaves will wither. When most of the flowers are brown, cut the entire flower stalk off. This is called deadheading. The foliage will still be green at this point, and should be left to die off naturally. 
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When Can Hyacinths Be Cut Back? As a general rule, you should not trim hyacinth while it is blooming, otherwise those famous scented flowers will not be at their best. Wait until the flowers are dead and the foliage is brown, before you get your secateurs anywhere near your precious plants. A few months after blooming, your hyacinth bulb will start to go dormant. It's absolutely normal - good things can only last so long, unfortunately - and a part of the life cycle that will bring you more gorgeous blooms in years to come.
Layer about 6 inches of light organic material (like straw or oak leaves) over the soil as it freezes. Take the material off the area little by little in late winter. Often the question of whether. In many cases, hyacinths will come back and bloom again when foliage has been left to die back and yellow naturally (just like daffodils). Though the next year's bloom is sometimes of lesser quality, cutting the flower spike from the plant and leaving the leaves will allow the plant to gather energy for next year's show. 
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When the grape hyacinth blooming season comes to an end, you need to care for the bulbs to protect and preserve them so that they can bloom again the following year. Read on for information about Muscari care after blooming. Post Bloom Grape Hyacinth Care You really don't want seeds to set on those grape hyacinth after flowering. To Cut or Not to Cut While some sources recommend cutting the flower stems off at the base after hyacinth flowers fade for a neater look and to prevent seeding, Colorado State University.
When the bloom begging to wilt.. When should you cut back hyacinth?. Italian heather (Erica ventricosa) can be cut back after it blooms.Specifically, June is a good month for cutting/pruning. If you trim the flowers at the end of June, you can cut the leaves in late July or early August. Method 2 Trimming Tulips for Display 1 Prune your tulips when the blooms are closed but the color is visible. To maximize your bloom time, cut your tulips when they are in the advanced bud stage. 
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Hyacinth blooms last longer than most bulbs—about two weeks, sometimes longer. Outdoors, hyacinth bulbs can last about three to four growing seasons if grown in a place with cold winters. Indoors, they're usually treated as annuals. Hyacinths contain alkaloid compounds that are toxic to humans and animals. Emerging in early spring, after the crocuses have gone back to bed but before the tulips have fully awakened, hyacinths hold a special place in a gardener's winter-weary heart. They pepper the landscape for just a week or two with extra-large, bottle-shaped blooms in shades of pink, purple, white, and red.
Tulips: Remove the dead blooms immediately after the flower fades if you want a good bloom next year. Just pinch off the dead flower. Same goes with grape hyacinth. Daffodils: It's not necessary to deadhead but it certainly helps so that the plant doesn't waste energy by making seed heads, returning that energy to the bulbs to prepare them. Tip The dying hyacinth leaves may look unsightly, so mask their appearance by planting annual flowers around them once the hyacinth flowers have died back. Grape hyacinth is fairly hardy, but Dutch hyacinths will need frost protection in USDA zone 7 and below. 
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Like other spring-blooming bulbs, plant hyacinth bulbs in mid- to late autumn, any time after your first fall frost and before the ground freezes. How to Plant Hyacinths Plant hyacinth bulbs 4 to 5 inches deep. Space bulbs 5 to 6 inches apart (grape hyacinths can be 2 inches apart). When flowers begin to bloom, take care to put your hyacinth in a position of full sun. For hyacinth shrubs outside, plant them in a place that will get full sun and then watch them thrive once spring comes! Aside from taking care to get the temperature right, the other thing to consider when caring for hyacinth is watering it correctly.