Frequently Asked Questions

Get answers to common growing questions — for soil, hydroponics, greenhouse, or any method. Can't find what you're looking for? Check our detailed guides.

Getting Started pH & Water Nutrients Systems & Setup Plant Health Environment

Getting Started4 questions

pH & Water4 questions

Nutrients4 questions

Systems & Setup4 questions

Plant Health4 questions

Environment4 questions

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Explore our in-depth guides or browse our plant database for specific growing information.

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What growing method is best for beginners?

How much does it cost to start growing?

What are the best plants for beginners?

Indoor vs outdoor growing - which is better?

What pH should my growing water/soil be?

How often should I water my plants?

Can I use tap water for my plants?

What is EC and when do I need to measure it?

What is NPK and why does it matter?

Organic vs synthetic fertilizers - what's the difference?

How often should I fertilize my plants?

What is nutrient deficiency/lockout?

What is the best growing system for beginners?

Do I need grow lights?

What soil or growing medium should I use?

How do I set up a greenhouse?

Why are my plant leaves turning yellow?

What do brown leaf edges mean?

How do I deal with pests?

Why is my plant growing slowly?

What temperature do plants need?

How much light do plants need?

Does humidity matter for plants?

How do I extend my growing season?

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