Homemade potting mix for 5 gallon buckets?
I plan on growing all my tomatoes in 5 gallon buckets this year and am looking for a good recipe for a suitable potting mix. I have an endless supply of aged horse manure and good compost, so hopefully I can use them in the mix. Also, I am looking for something with cheap and easily attainable ingredients. Any advice from people who make their own mixes would be great.
Thanks in advance and happy growing to all!