For the curious,
Tear open the packet and pour into watering can.
Now, you are ready to feed and water.
No mixing, no mess.
Use 1 packet per 1 gallon of water for in-ground and outdoor container plants.
Use 1 packet per 2 gallons of water for indoor container plants.
I would mix to be sure the fertilizer dissolves completely because it doesn’t if left to mix via the hose or faucet.
For $25 @ 10lbs bulk bag (free ship $50+) or go to a B&M
I’ve experimented with this for hydroponics (kratky method) just to try. Works well but definitely more Idgaf route.