Growth Plus is a plant extract which is quality controlled for particular growth hormones. To name a few – Cytokinins – Auxins – Enzymes – Giberellins – Ethylenes – plus many Micro-nutrients. HOW IS THE CYTOKININ HORMONE LEVEL CONTROLLED? Growth Plus is produced using the strictest quality control methods possible. The test used to determine hormonal activity is state-of-the-art and approved by Government Regulators.