---
title: "I typically premix a watering can of plant food using liquid food…"
description: "I typically premix a watering can of plant food using liquid food drops and use it throughout the week just to make sure the initial ratio is good from the get…"
url: "https://getplanta.com/community/lZ7uAE3pQ86jnFGxrCwLrg/fDs7IBL0Bcay5lxnf6yyhz?language=sv"
community: "Anything about plants 🇺🇸"
author: "Planta-medlem"
published: "2024-12-13T20:03:51.441727Z"
language: "en"
image: "https://images.getplanta.com/v2/cloudinary/global_data/communities/everythingHousePlants.jpg"
---

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# I typically premix a watering can of plant food using liquid food…

_Postat av Planta-medlem den 2024-12-13_

I typically premix a watering can of plant food using liquid food drops and use it throughout the week just to make sure the initial ratio is good from the get go. The nutrients aren’t evaporating in this time, though, are they? Should I be topping up the can with some extra drops after a few days?

## 6 kommentarer

### 9s kommenterade den 2024-12-13

Hey hey!

I think many bottles will tell you if you can premix. Usually, they instruct you not to because the effectiveness goes down once exposed to sunlight (someone correct me if I’m wrong here!) it’s not so much the evaporation but the effectiveness after sitting and exposed.

#### Planta-medlem svarade den 2024-12-13

Thank you! The one I bought doesn’t specify, but I also store it under the sink, out of the light.

#### 9s svarade den 2024-12-13

You should be good then :D I honestly did the same thing in the past and didn’t really notice that big of a difference

### eatyacarbs kommenterade den 2024-12-13

If anything I’d say to top off with more water because the water is what will evaporate, not the fertilizer, making it more concentrated than you might want

### Wolfen 🐺 kommenterade den 2024-12-14

It's perfectly fine. N-P-K isn't going to deteriorate In a week. The only issue you might come to on, is if there's some bacteria (beneficial), and it'd bloom the water in that time. You might get a scum on top. I dont see it being harmful, just gross 😐

### YinDeezy kommenterade den 2024-12-15

Yeah, I mix my fert in 2 gallon batches every couple weeks. No issues here

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