Understanding Potting Soil
Locally in Saudi Arabia, I dont have the many brands of potting soil that are available in US. I was trying to compare the composition of Miracle Gro Potting soil with one that is available locally. Miracle grow states that it has 0.21%:0.07%:0.14% NPK in the soil and it can last for upto 6 months.
Being a beginner gardener (starting off with container vegetable gardening) my question is as follows
Is this what is required for container vegetables like tomatoes, cucumbers, peppers, carrots, potatoes etc for the whole six months or do I need to add more fertilizer - as the plant grows - and how often?
Also can someone guide me as to how to relate this 0.21:0.07:0.14 to the normal 10-10-10 or 5-5-5 terminology used with fertilizers? One site said that miracle gro is actually 21-7-14. Is it really that way? And actually how much fertilizer to apply to the pot full of soil when actually applying it - either initially or when transplanting the seedlings or later as the time passes?
Would be highly indebted for any replies.