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Urtimax by Terra Aquatica · Organic Nettle Brew for Plant Immunity & Growth

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Urtimax by Terra Aquatica (formerly GHE) is a 100% organic liquid nettle brew designed to supercharge your plants' immune system. Rich in silica, iron, and essential trace elements, it prevents chlorosis, fights off pests, and stimulates vigorous growth. Perfect for both foliar spraying and root application in any growing medium. Grab yours today!
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Urtimax by Terra Aquatica is a 100% organic liquid nettle brew that acts as the ultimate shield and multivitamin for your cannabis plants, boosting their immune system and preventing nutrient deficiencies from day one.

Have you ever noticed that some plant boosters only make sense when you're running a massive setup, while others are only sold in tiny, expensive bottles meant for a single indoor plant, limiting how and when you can protect your garden?

This creates a really awkward situation in your grow room: either you have too many specialized bottles cluttering your shelves, or you try to improvise by diluting a heavy chemical fertilizer for a delicate foliar spray, ending up with burned leaves and a weak, stressed-out plant.

With Urtimax, you get a versatile, all-natural solution that works flawlessly whether you are giving some solo TLC to a single struggling mother plant or fortifying an entire shared outdoor crop, adapting your growing ritual to whatever context you need.

What it’s like to use Urtimax for individual plant care

When you're alone in your grow tent, focusing on that one special plant that needs extra love, Urtimax brings a sense of total control and peace of mind. Mixing a light foliar spray feels like preparing a healing tea for your favorite strain, allowing you to connect with the natural rhythm of your grow.

The immediate sensation is one of pure, organic care. Because it's made from fermented nettles, you know you aren't bombarding your delicate plant with harsh synthetics. It gives you the comfort of knowing you're naturally correcting chlorosis and strengthening its stems with pure silica and iron, right where it needs it most.

What it’s like when you apply it to your entire shared crop

When you scale up and share your growing space with friends or manage a large outdoor guerrilla garden, the dynamic changes. You need efficiency without sacrificing quality. Adding Urtimax to your main reservoir or large watering cans makes the whole feeding experience smoother and much more rewarding for everyone involved.

It helps the entire garden flow naturally. Instead of worrying about pests spreading from one plant to another, you're blanketing the whole crop in a natural armor. It's fun and satisfying to watch the entire canopy perk up, turning a deep, vibrant green as the nettle extract works its magic across all your plants simultaneously.

Advantages and benefits in both types of application

  • Because it contains high levels of silica and iron, you can easily correct nutrient lockouts and chlorosis, which means your plants will recover their vibrant green color and vitality in record time.
  • Thanks to its 100% organic nettle fermentation, you can apply it safely without risking nutrient burn, which means you enjoy total peace of mind, whether treating one delicate seedling or a whole mature crop.
  • By acting as a natural pest repellent, you can keep bugs and fungi at bay without toxic chemicals, which means your harvest remains pure, clean, and safe to consume, reducing the need for harsh insecticides for cannabis.
  • With its highly soluble liquid format, you can use it in soil, coco, or hydroponic systems, which means you have the ultimate flexibility to adapt it to any growing style or shared setup.
  • Because it stimulates the plant's immune system, you can build stronger, thicker stems, which means your plants will easily support the weight of massive, heavy buds during flowering.

Tips for choosing how and when to use it

Whether you are nursing a single plant or feeding a jungle, knowing how to apply this nettle brew will make your life much easier. Here is how to adapt it to your context:

  • When it’s better to use it alone: Use it as a targeted foliar spray (diluted in water) for a single plant showing early signs of yellowing leaves or pest stress.
  • When it shines most in company: Mix it directly into your main nutrient reservoir when feeding a large, shared hydroponic system to boost the overall immunity of the entire room.
  • How to adapt intensity: For regular maintenance, use a light dose in your root drench. If you are fighting a severe deficiency, increase the frequency of foliar applications until the plant recovers.
  • Best time of day: Always apply foliar sprays just before the lights go out (or at sunset outdoors) to prevent the leaves from burning under intense light.

Frequently Asked Questions

Can I mix Urtimax with other fertilizers in my reservoir?

Yes, absolutely. Urtimax is a natural additive that works perfectly alongside your regular cannabis fertilizers, whether you are using organic or mineral lines. Just add it to your water after adjusting your pH.

How often should I use it for a single stressed plant?

If you are treating a specific deficiency or pest issue, you can use it as a foliar spray every 2 to 3 days until you see improvement. For general maintenance, once a week is plenty.

Does it leave a strong smell in the grow room?

While it is a fermented nettle brew and has an earthy, natural scent in the bottle, the smell dissipates very quickly once mixed with water and applied to your plants. It won't stink up your shared living spaces.

Do I need to flush my plants if I use this heavily?

No, because it is 100% organic and free of heavy synthetic salts, it won't cause toxic buildup in your substrate. However, we recommend stopping foliar sprays once the buds start forming to avoid excess moisture.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve always been a huge fan of traditional organic farming techniques, and Urtimax is basically the modern, bottled version of the classic nettle teas my grandfather used to make. When I’m testing a new, delicate strain on my own, I rely heavily on it as a foliar spray during the vegetative stage. It gives the leaves this incredible, waxy shine and keeps spider mites completely uninterested. It’s my go-to rescue remedy if a mother plant starts looking a bit tired or yellow.

On the flip side, when we run larger, shared outdoor projects with the team, Urtimax goes straight into the main irrigation tanks. It’s amazing how it unifies the health of the crop. We’ve noticed that plants treated with it handle heat stress and sudden temperature drops way better than those without it. The stems get noticeably thicker, which is exactly what you want before the heavy flowering phase begins. It’s one of those old-school secrets that just never fails.



  • Is the shipping discreet?

    Yes, the shipment is 100% discreet, no one will know what you have bought, also the sender is SITE OF SHOPS ONLINE.

  • Do you ship worldwide?

    Yes, we ship to almost every country in the world although you need to know the current legislation in your country to make sure that you do not break any regulations with the germination of the seeds.

    UK: 3-4 days (express)
    USA: 4-5 days (express)
    Australia: 4-5 days (express)
    Japan: 4-5 days (express)
    Canada: 4-5 days (express)
    South Africa: 4-5 days (express)
    New Zealand: 5-7 days (express)
    View all

    The customer must be informed about the laws of their country regarding seeds or other products that may be purchased on our website, the possession of which may constitute a criminal offence in the country of receipt.

    We cannot be made responsible for the wrong use that some people decide to give to the seeds, so please don't act against your national laws.

    Due to problems with customs you can check here for restrictions to certain countries.

  • What payment methods and currencies do you accept?

    We accept the following payment methods: Bank transfer, Cryptocurrencies, cash, credit and debit cards and cash on delivery (Spain, Belgium, France, Italy, Portugal).

    You can change the currency on the top right to know the price of the products in your local currency and of course pay this way.

  • How long does it take to ship my order?

    In 24/48 hours we will ship your order.

  • Are the seeds guaranteed to germinate?

    If you live in a country where the cultivation of cannabis is legal and you decide to plant the seeds, it is good that you know that all the seeds that we commercialize have germination guarantee.

    If you germinate with the method of paper napkins and you have followed all the steps that we indicate here, you will only have to return us the seeds not germinated in their original packaging and when we receive them we will proceed to the change.

    Then we take care of requesting the return to the seed bank, we do not transfer this responsibility and time to our customers.

  • What if I receive a bad or damaged product?

    If you receive a broken product due to transport, you have to notify us within 24 hours for insurance coverage, always contact us as soon as possible and we will fix the problem!

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