You can grow perennials, shrubs and trees, even fruit trees, in large containers. But they require a soil mix that provides a long-term, steady supply of nutrients. This recipe ensures the drainage that is essential for healthy growth in containers and also provides organic soil amendments to nourish your plants. 4 parts sphagnum peat 2 parts compost (or 1 part compost and 1 part garden soil) 1 part small bark chips (composted) 1 part perlite Mix the above ingredients, and for each cubic foot (0.03 cubic meters) of media, add these slow-release organic fertilizers: 4 ounces (110g) of dolomitic limestone 4 ounces (110g) of bonemeal 1 pound (500g) of greensand 2 ounces (55g) of bloodmeal 2 ounces (55g) of kelp meal With this hefty dose of nutrients, your plants will not need additional fertilizing until a month after potting. Go to Find Organic Products to locate sources for these organic soil amendments.
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