12/2/2023 0 Comments Tut grass![]() It is typically grown as an annual in areas north of USDA Zone 9, but potted plants may be brought indoors in winter. It will not survive winter if temperatures dip below 25☏. ‘Baby Tut’ is a dwarf cultivar that typically grows to only 1.5 to 2’ tall. Specific epithet comes from the Latin word involvere meaning to wrap in reference to the involucral bracts on this sedge. Genus name comes from the Greek word kypeiros which was the name given to some local sedges. Flowers are followed by small dark brown 3-angled nut-like fruits. Flower spikelets emerge green but turn reddish-brown as they mature. The true leaves of this sedge are inconspicuous bladeless sheaths which wrap the stem bases.ĭense clusters (15 to 25) of flattened flower spikelets (6-30 tiny florets per spikelet) rise above the umbrella-like bracts for bloom summer to fall. Bracts look like leaves, but they are not. Each stem is topped by a whorl-like cluster of 10-25 thin slightly downward-arching leaf-like bracts (each to 6-15” long) which form a showy umbrella-shaped rosette. Erect triangular stems rise up from a network of short woody rhizomes. This sedge is ornamentally grown for its showy green bracts and not for its somewhat insignificant flowers and fruits. where it has escaped gardens and naturalized primarily in wet disturbed sites, water margins, ditches and swampy areas from Florida along the Gulf Coast to Texas plus Arizona, California and Hawaii. It has been introduced in many tropical, sub-tropical and warm temperate areas around the globe over time including the southern U.S. It is probably native to boggy areas and lake/stream margins in Madagascar (Malagasy Republic), but early on naturalized throughout eastern Africa. Florida Exotic Pest Plant Council has designated this plant as Category II: An invasive exotic that has not yet altered plant communities to the extent it would qualify as Category I.Ĭyperus involucrata, commonly called umbrella plant or umbrella sedge, is a rhizomatous, evergreen, densely-clumping, tender perennial sedge that typically grows to 3-6’ tall in frost free areas, but to 2-3’ tall where not winter hardy and grown as an annual. Planting in containers helps prevent some unwanted spread. It can spread aggressively by self-seeding and rhizomes. In warm frost-free climates, this sedge is weedy bordering on invasive. Rather than overwinter indoors, plants may be grown as if they were annuals by letting them die each winter and replacing them each spring. When overwintering, set the container in a saucer filled with water, and place the container and saucer near a bright sunny window. ![]() Another option is to divide plants and pot up the divisions for overwintering indoors. Containers can be brought indoors if not too large. Louis area, these plants are tender perennials that must be brought indoors in fall before first frost for overwintering in a sunroom or greenhouse. Plants may be grown in containers at the margins of water gardens, pools or ponds. ![]() Plants in Zones 8-9 will die back with frost, but may survive the winter and put out new foliage in spring if the roots remain unfrozen. Plants are tender perennials that are intolerant of frost. This is an amphibious sedge which grows well in shallow standing water. Plants tend to be more compact in sun and more open, larger-leaved and taller in shade. Winter hardy to USDA Zones 9-12 where is easily grown in wet, boggy soils in full sun to full shade. ![]()
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