Yes and no. The FloraNova series is designed to use one part at a time, but in a time of transition it may be beneficial to mix the two at half strength each (makes a full strength nutrient solution). Use FloraNova Grow® in the vegetative stage and FloraNova Bloom® in the fruiting/flowering stage.
Note: If your plant is not fruiting or flowering plant, FloraNova Grow® is all that you will need to use.
For further information, refer to our FloraNova feedchart.