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Growing Media Floral Careers Plant Propagation. Four Functions of a Growing Medium (Root Medium) ► Provide a source of nutrients ► Provide a source of.

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Presentation on theme: "Growing Media Floral Careers Plant Propagation. Four Functions of a Growing Medium (Root Medium) ► Provide a source of nutrients ► Provide a source of."— Presentation transcript:

1 Growing Media Floral Careers Plant Propagation

2 Four Functions of a Growing Medium (Root Medium) ► Provide a source of nutrients ► Provide a source of water ► Provide aeration and drainage ► Support the plant in the container

3 Growing Medium Components and Their Roles in the Medium

4 Sphagnum Peat Moss Sphagnum Peat Moss Origin Organic or Inorganic? Role in the Medium Decomposed sphagnum moss. Organic -Water holding capacity. -Acidic.

5 Composted Bark Origin Organic or Inorganic? Role in the Medium -Composted hardwood and softwood barks. -minus ¼ inch diameter. Organic -Improves aeration and drainage. -Nutrient holding capacity.

6 Composted Yard Waste Origin Organic or Inorganic? Role in the Medium Composted leaves, grass clippings and brush. Organic -Water holding capacity. -Nutrient holding capacity.

7 Coir Origin Organic or Inorganic? Role in the Medium Waste product from coconut hulls after the fibers have been extracted. Organic -Water holding capacity. -Used like sphagnum peat moss in the medium. -Can be high in salt; leach before using.

8 Perlite Origin Organic or Inorganic? Role in the Medium Volcanic rock that has been crushed and heated to high temperatures. Inorganic -Improves aeration and drainage. -Available in different grades.

9 Vermiculite Origin Organic or Inorganic? Role in the Medium Mica-like mineral that is crushed and heated in a furnace to high temperatures. Inorganic -Water holding capacity. -Nutrient holding capacity. -Available in grades. -Coarser grades improve aeration and drainage.

10 Calcined Clay Calcined Clay Origin Organic or Inorganic? Role in the Medium Clay heated in a furnace to high temperature. Inorganic -Water holding capacity. -Nutrient holding capacity.

11 Rockwool Origin Organic or Inorganic? Role in the Medium Synthetic fiber made from melted basalt, coke and limestone. Inorganic -Ground rockwool can improve water holding capacity.

12 Sand Origin Organic or Inorganic? Role in the Medium Coarse silica sand. Inorganic -Adds weight to the medium. -May improve aeration and drainage.

13 The End


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