Wondering the best time to use Canna PK 13/14? Canna recommends a feeding schedule for Canna PK 13/14 in the 4th week before harvest, or the 5th week of flowering for an 8 week strain growing in coco coir. For a longer flowering strain, you need to adjust this to ensure you use it the 4th week before harvest. For example, on a 12 week strain you’d want to use PK 13/14 at the start of week 9.
If you’re looking to grow weed in coco coir using Canna Coco nutrients, check out our Canna Coco feeding schedule to learn more about how PK 13/14 should be used along with Canna Coco A & B, Rhizotonic, Cannazym, and CannaBoost.
Recommened dosage: How much Canna PK 13/14 should be used?
The recommended dosage of Canna PK 13/14 is 28 mL per 5 gallons of water according to the growth chart from their nutrient calculator website. You use it for one week of watering.
Using small amount of Canna PK 13/14 throughout entire flowering cycle
Some growers notice that this results in Phosphorus (P) and Potassium (K) deficiencies so they also use a light dose of Canna PK 13/14 outside of the one week recommended by the manufacturer. For example, using 5-10 mL of PK 13/14 starting a few weeks earlier than the recommended 5th week has shown to reduce Phosphorus deficiencies.
Knowing when to use Canna PK 13/14 during flowering will ensure that the pot plants receive a higher ratio of PK in their NPK percentages, which is something that the weed flowering process requires.
Going above the recommended dosage of Canna PK 13/14 may also result in excess nutrients leading to nute burn, so monitor plants closely and keep a grow journal to best track what’s best time to use Canna PK 13/14 for the strain of marijuana you’re growing.
The best time to use Canna PK 13/14 may vary a bit based on the strain and flowering rate which may vary based on the conditions of your grow room, so knowing when to use Canna PK 13/14 may vary accordingly.
Canna PK 13/14 and autoflower weed strains
Determining the feeding schedule for Canna PK 13/14 can difficult for auto-flower strains. If you’re using the Canna nutrient line for growing autoflowering weed strains, you’ll need to pay attention to when your flowers begin forming in order to calculate how far along you are in the growth cycle. The vendor where you get your autoflower seeds should provide information on the likely flowering timeframe for these autoflower seeds. Using this info you can calculate the correct week to start adding PK 13/14 to your nutrient solution. Remember, for an 8 week strain Canna recommends you used PK 13/14 at the start of week 5 for just 1 week.