I just bought this flowering plant food. Lilly Miller Ultra Green Color Blooms, its ratio: 15-30-15.

I have never done this before, not sure on what to do.
Directions
When feeding established plants: side dress flowers, vegtables, and bulbs using 1-1/3 cups for 5x10. For established shrubs and trees, spread evenly in a wide band under the dripline beneath the outer leaves. Keep plant food at least 6" from trunks or stems. Use 1/4 cup for established plants less than 3' tall. Apply only to well hydrated plants. Do not apply directly to plant foliage. Scratch lightly into soil surface, taking care not to damage shallow roots. Always water plants and soil well after adding.

My plants are 2 1/2 wks into flowering, less than 3' tall. Indoors. I do not understand what I am suppose to do. Where to put it? Should I cut back on the amount and feed more often. It says feeds for up to six weeks. Please please help

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Free the Seed!!!

Use 1/8th cup and spread it into the topsoil and water it good.

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Kali Mist/Colombian Red Haze journal

Here's my last grow AK47 and PPP in hempy journal

Thanks. That's per plant right?

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Free the Seed!!!

That is per plant right?

__________________
Free the Seed!!!

Can you mix that amount into a 1 gal water jug, ph it and water it that way?

__________________
Kali Mist/Colombian Red Haze journal

Here's my last grow AK47 and PPP in hempy journal