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From: Austin, TX
Region: Southwest
Topic: Compost and Mulch, Seeds and Seeding, Wildflowers
Title: Wildflower seeds affected by mulch in Austin
Answered by: Barbara Medford
It can, if the seeds are being caught in the mulch and unable to contact soil. Also, if the mulch is left on when the seeds are germinating, which is pretty soon for Central Texas, they would not be getting the sunlight they need for germination. You need to examine the beds where you let the plants re-seed and see if the mulch has decomposed enough that it is really blended into the soil. That is one of the advantages of organic mulches, they will more or less compost in place, amending the soil and contributing to good drainage. If not, we would definitely recommend at least lessening the thickness of the mulch around your wildflowers. And lift it off gently, by hand, because some of those seedlings may have already appeared. You could also try harvesting seed from some of your plants and then placing those seeds in a fertile location where they can get sun and contact with the soil. We have three How-To Articles that we would like for you to read; you can probably pick up some of the answer to your question from each:
Seed regrowth through mulch
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March 18, 2009 - I am a novice gardener and need advice on how to fertilize my native perennials. I would like to use organic fertilizer and need advice on exactly what to use. I have a compost pile but it does not ...
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July 19, 2011 - Should we mulch our live oaks in pastures for water retention?
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Native Grass is Falling Over
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I've tried to find this answer but am stumped as to the cause. We live in Fredericksburg, TX and have several different tall grasses, Yellow Indian grass, Little Bluestem, wire...
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