Late flowering is when growers start getting twitchy. Flowers and fruits are swelling, the finish line’s in sight, and the instinct is to push. So out come the additives. EC goes up. Expectations go higher.
But more often than not, that strategy backfires. You get locked-out roots, scorched tips, and a finish that doesn’t live up to the rest of the grow.
Ultimate PK is here to keep things tight. It gives your plants what they need: phosphorus and potassium to finish strong without flipping your whole feed routine upside down.
Let’s talk about how to run it right.
By the final phase, your plants have stopped stretching. Nitrogen demand drops. They now want phosphorus to drive energy and potassium to pack on weight, boost density, and fine-tune flavour.
But just dumping raw P and K into your feed isn’t the answer. Unbalanced bloom boosters often spike EC, crash pH, and leave your root zone overstressed. It’s a gamble you don’t need to take.
Ultimate PK delivers what your plants need in a buffered, balanced format. No stress. No drama. Just focused support at the right time.
When to Bring It In:
Use Ultimate PK in the last three weeks before flush. That’s the point when the plant shifts into full ripening, packing weight, tightening calyxes, and sharpening its resin game.
Not everyone’s into flushing. Some swear by plain water, but we don’t. We prefer to finish with a light feed that is enough to support the plant through the final stage without overloading it. Look, when something’s near the end, you don’t starve it. Same with plants. Uptake drops, sure, but a little nutrition goes a long way. A straight water flush can pull everything from the leaves, turn them brown, and make trimming a pain. We keep it low, keep it clean, and let the plant finish looking like it should: healthy, potent, and easy to handle.
Because the formula is clean and low in nitrogen, it slots in easily. It won’t clog your medium or push salt levels too high. Instead, you’ll get a sharper, smoother finish without course-correcting late in the cycle.
Ultimate PK isn’t a swap. It’s a compliment.
It runs side by side with Basis A and B, supporting your macro and micro foundation while stepping up phosphorus and potassium exactly when they’re most needed.
You don’t have to tweak ratios, drop doses, or second-guess. Just layer it in. It integrates perfectly into the Mills system without risk of lockout or feed disruption.
That means fewer changes and more control during the most sensitive growing stage.
Most heavy PK additives come with baggage—residue in the root zone, flavour loss, and a messy flush that throws off your harvest window.
Ultimate PK avoids all of that. It’s built for clean runoff and quick rinse-out. That makes your transition to flush simpler, more efficient, and easier to time.
You get a clean finish. No damage control. No reset button.
The final weeks can make or break your harvest. But only if you hold your balance.
Ultimate PK gives your plants the fuel to finish strong without compromising everything that came before it: no inflated EC, nutrient chaos, or fire-fighting at the eleventh hour.
Use it with focus. Keep it clean. Let the system carry your crop through with full flavour, real structure, and harvest weight you can count.
