Complete Seed Germination Kit for Stronger Starts
The Plagron Seedbox is a complete germination kit designed to give seeds the best possible start. With a growing tray, transparent lid, 12 germination plugs and 250ml of Plagron Seedbooster included, it gives you everything you need to germinate seeds safely and consistently.
Simple to use and ideal for beginners, the Seedbox helps create a warm, humid environment for early growth while the Seedbooster supports faster, stronger germination. Just follow the included instructions, keep temperatures stable, and give your seedlings the right conditions from day one.
Key Benefits
- Complete germination kit; includes tray, lid, plugs, Seedbooster and instructions
- Ideal for beginners; simple step-by-step setup with no guesswork
- Helps improve germination; Seedbooster supports faster and more powerful seed development
- Creates a stable propagation environment; transparent lid helps maintain warmth and humidity
- Includes 12 germination plugs; perfect for starting multiple seeds at once
- Easy to transplant; seedlings are ready to move on once roots appear outside the plug
Why Choose Plagron Seedbox?
Getting seeds started properly makes a massive difference to the rest of the grow. Poor germination, unstable moisture levels and weak early growth can all hold plants back before they’ve even had a chance to get going.
The Plagron Seedbox keeps things simple. The tray and clear lid help create the right environment for germination, while the included Seedbooster is designed to support faster, stronger seed development.
It’s a clean, easy way to start seeds without piecing together separate trays, plugs and additives yourself.
How to Use
- Mix 1 part Seedbooster with 1 part water
- Pour the solution evenly into the tray and allow the germination plugs to absorb it.
- Pour away any excess liquid after the plugs have soaked.
- Place each seed around 5mm deep into the centre of a plug using clean hands or tweezers.
- Fit the transparent lid onto the tray and place it in a room at around 20–24°C.
- Once seeds start to germinate, usually after around 4–7 days, slightly angle the lid to allow fresh air in.
- Remove the lid once seedlings reach it, and transplant once roots begin growing outside the plugs.
What’s Included?
- 1 x Growing tray
- 1 x Transparent lid
- 12 x Germination plugs
- 1 x 250ml Plagron Seedbooster
- 1 x Instruction manual
Want to learn more about growing from seeds? Read our blog here!
We're the kings of stealth shipping! All of our orders are sent out in plain mailer bags or boxes with no mention of the company name for ultimate discretion.
Mainland UK Next Day Shipping will be with you the next day if ordered before 2pm. Our standard shipping is dispatched within 4 days.
We always aim for make sure our customers love our products, but if you do need to return an order, our 24/7 returns portal makes it incredibly easy. Just visit onestopgrowshop.co.uk/returns
Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. If you have any issues with shipping to your particular country, get in touch with customerservices@onestopgrowshop.co.uk and we'll create you a bespoke shipping quote.

