Skip to product information
1 of 3
Plant Magic

Plant Magic PK 13-14

Plant Magic PK 13-14

Regular price £10.49 GBP
Regular price Sale price £10.49 GBP
Sale Sold out
Taxes included. Shipping calculated at checkout.

In stock

Size

Order by 3pm Mon–Fri — we aim to post same day · FREE Express Delivery over £60 · 1–2 working days · Free Wembley pickup

Pairs well with

View full details

Description

More phosphorus and potassium when flowers need it most

Plant Magic PK 13/14 is a powerful bloom booster that raises phosphorus and potassium levels through the most demanding stages of flowering. Working alongside your base nutrient, it supplies the extra phosphorus for energy transfer and potassium for efficient nutrient movement that plants call on as they shift into heavy flower production – building fuller flowers with better structure, improved bud density and heavier final yields. It performs across soil, coco and hydroponic systems, making it an easy add-in for most grow room setups.

Key Benefits

  • Boosts phosphorus and potassium during the bloom stage
  • Stronger flower formation and improved bud density
  • Higher yield potential in indoor growing
  • Enhanced nutrient uptake at peak flowering demand
  • Works alongside base nutrients without disrupting your feed
  • Compatible with soil, coco and hydroponic systems

Airy buds or reduced yields in mid to late flower?

As plants move into heavy flower production their PK demand rises sharply, and growers who fall short often see airy buds and lower yields. PK 13/14 corrects that by delivering a concentrated PK boost exactly when plants need it most, strengthening flower development and bud density so plants keep the energy to maintain strong flowering right to the end of bloom.

How to Use

  • Timing: begin from around week four of flowering, once flowers start to form
  • Dose: mix 1–2ml per litre of water
  • Media: suitable for soil, coco and hydroponic systems
  • Method: add to your nutrient solution alongside your base nutrient feed, then stir thoroughly before feeding

Technical Specifications

  • PK ratio: 13/14 — Plant Magic’s own designation for the phosphorus-to-potassium ratio
  • Type: PK bloom booster / additive
  • PK ratio: 13–14 (phosphorus–potassium)
  • Dose rate: 1–2ml per litre
  • Use window: from around flowering week 4
  • Compatible media: soil, coco, hydroponics
Feed Chart
Plant Magic PK 13/14 · soil, coco and hydroponics, flowering
Stage Per 1 L Per 10 L
Flowering — first application 1 ml 10 ml
Flowering — second application 1.5 ml 15 ml
Flowering — third, fourth and fifth applications 2 ml 20 ml
Note — PK 13/14 is the Essential-tier alternative to Platinum PK 9/18; the two are not used together. The rates are printed in the order Plant Magic give them; the week columns could not be resolved from our copy of the chart. The final bloom column reads "flush with water only". Check pH and EC after mixing.

FREE Express Delivery on orders over £60. We aim to post same day for next-working-day arrival — order by 3pm Mon–Fri. Delivery is 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.