How to Fertilize a Silk Floss Tree


Silk floss trees, often called a kapok tree, are a tropical tree that grows in U.S. Department of Agriculture (USDA) hardiness zones 9b through 11. The silk floss tree produces seed pods that are the source of kapok fiber. This fiber is a popular natural floss used in pillows, mattresses and furniture. Silk floss trees can easily reach 50 feet in height and 55 feet in spread. Fertilizing your silk floss tree is not difficult.

Step 1

Dilute your liquid organic fertilizer for your silk floss tree in a bucket or watering can as directed on the packaging. Liquid fertilizers like kelp emulsion or fish emulsion are good liquid organic fertilizers. Different manufacturers will have different dilution recommendations. Mix enough to thoroughly soak the base of your silk floss tree.

Step 2

Pour the diluted liquid fertilizer around the base of your silk floss tree once a month.

Step 3

Loosen the top 4 to 6 inches of soil under your silk floss tree with a shovel every two to three years.

Step 4

Mix an inch or two of composted manure or worm casings with the soil under your silk floss tree.

Step 5

Mix the loosened soil and composted manure and worm casings with the soil under your silk floss tree.

Step 6

Water your silk floss tree thoroughly to encourage the nutrients to soak down through the soil.

Things You'll Need

  • Liquid organic fertilizer
  • Bucket or watering can
  • Composted manure or worm casings
  • Shovel


  • Silk Floss Tree
  • Florida Gardener: Chorisia Speciosa
  • University of Florida: Chorisia Speciosa Floss Silk Tree
Keywords: silk floss fertilization, floss tree fertilization, kapok fertilization

About this Author

Although he grew up in Latin America, Mr. Ma is a writer based in Denver. He has been writing since 1987 and has written for NPR, AP, Boeing, Ford New Holland, Microsoft, RAHCO International, Umax Data Systems and other manufacturers in Taiwan. He studied creative writing at Mankato State University in Minnesota. He speaks fluent Mandarin Chinese, English and reads Spanish.