I dont know guys. Checkout these two articles ive found that lead me to believe that i should be feeding this early. Thought id share. The second link was taken from the Pro-mix website:
The Joys of Big Bloom
We were thrilled to open up the Sunset Western Garden Book and see that our Big Bloom fertilizer was featured in their section on organic fertilizers. While the Big Bloom name implies that it's a great fertilizer for flowering plants --- and it is -- we found so many more uses for it in our gardens and greenhouses over the years.
As an organic, low NPK fertilizer, it won't burn plants or overload the soil with unnecessary nutrients. For this reason, we use it on young seedlings after two or three sets of leaves have emerged, and we also use it as a drench on stressed plants that have been impacted by adverse weather, pests or disease, or other problems. We have also found that it is indispensable during transplanting -- adding a little Big Bloom to that first watering after new plants go on the ground can really help get them off to a great start.
And remember, Big Bloom is about so much more than NPK. Its a live culture of vitamins, amino acids, natural growth hormones, enzymes, and beneficial organic microbes. We add earthworm castings, bat guano and other delicious organic ingredients like Norwegian kelp for nutrient uptake and higher yields, plus rock phosphate, which helps transfer energy from one part of the plant to another, delivering bigger buds and more fragrant flowers.
Use Big Bloom on every plant you own, every time you water. It is actually the only fertilizer that can be used over its recommended dosage. In fact, we say the more the merrier. Your plants will love you for it! Give it a try this spring and watch your garden thrive.
http://www.hort.purdue.edu/hort/facilities/downloads/proMixBX.pdf
