The white pistils are now rapidly protruding from every node on the plant. The calyxes are relatively small but that will change by next week. I gave her a super bloom fertilizer which means a solution containing a decrease in nitrogen and an increase in potassium and phosphate (phosphorus). You will see results in roughly one week or so. There are multiple ways too determine maturity. One way is to watch the pistils; when healthy, and in the early stages of flowering, pistils will almost always be white. As the flowering stage progresses, the pistils will start to dry out and turn color (the color of pistils ranges from a deep orange to a vibrant red). Watch for this drying out process and the pistil coloration.