It crashes your plants’ systems! This forces them to start bulking out fruit – ready for reproduction - and defend against frost. It’s a natural, winter effect anticipated by annual species of plants.

When you see swollen fruit pods, you know it’s working! There’s also a purple, red & burgundy colour shift, caused by the winter effect!

In the USA they’re mad for it.

Use at 2-3ml/L the week before your final flush week (e.g. If you flush in week 8, use during week 7).

It's a standalone pre-flush. It won't clash with any of the nutrients you've used during your grow. It’s also suitable for all medias & growing methods (except Aquaponics!)

Note:

Do not use at any other point in your cycle.

Use one week's worth for 5 - 7 days (watering at least every 3 days)

If watering every day: Use Winter Frost for 5 days, then flush with pure water for 10 days

If watering every 2 - 3 days: Use Winter Frost for 7 days, then flush with pure water for 7 days

Use for 2 days before beginning your flush.

Use conservatively to start as you can always be more aggressive in the future.