Plagron PK 13-14 is a powerful flowering booster designed for the most important part of bloom – when your plants are stacking, swelling, and packing on weight. With a concentrated dose of phosphorus (P) and potassium (K), it supports strong flower formation, improved density, and heavier yields when used alongside your base bloom nutrients.

If you’re aiming for tighter buds, better structure, and a more productive flowering cycle, PK 13-14 is one of the most effective additives you can introduce at the right time.

Why growers use PK 13-14

During mid-flower, plants naturally demand more P and K to build flowers properly. Adding a dedicated PK booster helps cover that demand without having to push your base feed too hard, keeping your nutrient programme more balanced and controlled.

Key benefits

• Supports rapid bud development and bulking in mid-flower
• Helps improve flower density and overall yield potential
• Concentrated formula, so a little goes a long way
• Works alongside any bloom base nutrient programme
• Ideal for growers looking to maximise harvest weight without overfeeding

When to use it

PK 13-14 is best used during the peak flowering window, typically mid-bloom when plants are focused on building mass rather than stretching. This is when the extra P and K can make the biggest difference to final results.

How to use

Add Plagron PK 13-14 to your nutrient solution alongside your normal bloom feed. Start light and build up gradually, keeping a close eye on EC and plant response. For best results, maintain stable pH levels and avoid stacking too many strong additives at once.

Suitable for

Soil, coco and hydroponic systems.

A great addition to

PK 13-14 pairs perfectly with a solid base bloom nutrient, plus a clean feeding schedule and good environmental control. It’s especially useful for growers pushing for maximum flower weight in the final harvest.