Pampas Grass will not plume

outdoors24(Zone 6 Virginia)April 8, 2005

I have 2 plants, one is about 8 years old, and the other about 4 years old. They "plumed" before, but for the last 2 years, they have not. What could I do to make these grasses "plume" for this coming growing season? Neither plant has ever been pruned. Any advice would be greatly appreciated and very antisipated.


SW Virginia

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What has changed? Did a tree grow and create more shade? Have you fertilized/not fertilized them differently? Do the plants themselves look healthy and full? Grasses sometimes need some nitrogen fertilizer so a soil test should help you see if you need to feed them.

    Bookmark   April 14, 2005 at 5:23PM
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AgastacheMan(z7 CA)

Stress the plants. Play mother nature and send a little signal in the middle of summer by holding off some water and maybe increasing just slightly the phosphorous in your fertilizer for flower and seed formation.

    Bookmark   April 18, 2005 at 12:45PM
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I have had my pampas grass for about 4 years now and never have they plumed. I recently (early march) moved them to full sun. I hope to get some plumes this year but I'm wondering if I need to fertilize them. Has anyone ever tried epsom's salts?

    Bookmark   May 17, 2006 at 6:16PM
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Generally, fertilizing ornamental grasses is not necessary or even recommended - fertilizing has a tendency to produce lush growth (at the expense of flowering) that becomes rather loose and floppy. And I'm not sure what benefit empsom salts would provide unless your soils were radically deficient in magnesium. Lack of pluming or blooming is usually related to insufficient sun conditions or lack of summer heat or, too much fertilizing with a high nitrogen content.

    Bookmark   May 18, 2006 at 8:16AM
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gardengal48 thanks for your reply. i will wait impatiently to see if the full sun helps and i will not
fertilize. so far it's growing fast and full.

    Bookmark   June 2, 2006 at 8:58PM
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