Holland Secret Tri-Pack (3 x 500mL): Plant Fertilizer

Brand: Future Harvest

Product Code: FHD-0700016

Availability:In stock

$40.99 40.99


The best fertilizer for plants

Looking for the best fertilizer for plants? Well you’ve found it!

Introducing the Holland Secret 3-part plant fertilizer.

This 3-part fertilizer helps your plants avoid deficiencies by delivering all 12 essential micro and macro nutrients, and is pH buffered for ease of use, which means less time spent diagnosing plant diseases and more time spent harvesting a large crop.

Holland Secret is regarded as the penultimate plant fertilizer for its ease of use and can be used with any grow medium in any situation, and any part of the grow cycle. And unlike other plant fertilizers, you don’t have to worry about clogged lines, thanks to the technicians at Future Harvest, Holland Secret is sediment and urea free.

Grab the best fertilizer for plants today!


Key Features: 

  • This powerful plant fertilizer automatically buffers pH to acceptable levels for growth.
  • 100% sediment free! Which means no precipitation of nutrient salts falling out of solution and becoming unavailable to your plants.
  • Another thing that makes the Holland Tri-Pack the best fertilizer for plants is that it works well for novices and experts alike. As well as being very easy to use, this plant fertilizer gives precise control over feeding schedules.  
  • Extremely low salt index and only the finest raw materials used.
  • Change the ratio between the three bottles to control nutrition for each specific stage of plant growth, as a professional grower would do. 
  • It can be used as a stand-alone without additives or as a complete feed program.








micro guaranteed analysis

** Holland Secret Grow, Micro and Bloom are designed to be used in conjunction with one another, and never as stand alone nutrients. **

Additional Info

It’s important to use all three parts of the Holland Secret 3-Part plant fertilizer in tandem with one another. Using only one or two parts of the three, like Grow and Bloom without Micro for instance, means your plants will miss out on all the nutrients they need to grow and could potentially put them at risk of deficiencies.

And if you’re looking for more reasons to use the best fertilizer for plants and vegetables here are two. It’s CFIA certified – meaning it meets all the regulatory standards – and it has the added benefit of being able to be used as a foliar spray, so if you want to spray away, you can.

For foliar spray recipes that include the Holland Secret 3-part plant fertilizer, simply click here to go our blog article on foliar spray recipes.

And to get free shipping on the best fertilizer for plants and vegetables, simply spend over $100 CAD (around $75 USD) on any order.








Customer Reviews

Based on 7 reviews Write a review


The Future Harvest online store ships all over Canada and the United States from Canada. We also have a distributor in the United Kingdom, The Growers Wholesale. CLICK HERE for a list of our distributors. 

All orders are processed within 1 business day.

Your order will be marked as fulfilled from the moment it’s been boxed up in the warehouse awaiting for the courier to pick it up. Once your order has been fulfilled, you will receive an email with your tracking number. Your tracking details will appear once the courier has processed the package.

We deliver packages through the following couriers: Canada Post, UPS, Canpar, and Purolator. The courier will be chosen based on the fastest estimated shipping time. 

We currently only ship to PO Boxes across Canada via Canada Post. If you enter a PO box for a US order, we will contact you to provide an alternative delivery address.





In Canada, we offer free shipping over $100 CAD before tax. In the United States, we offer free shipping over $150 CAD. 



All Future Harvest online orders will be shipped out in branded boxes. If you would like discreet shipping, simply request for it in the shipping notes section on the cart page. 



Shipping Times
British Columbia 
2-3 business days 
& Manitoba 
3-5 business days 
Ontario, Quebec,
Newfoundland & Labrador,
& PEI 
3-7 business days 
USA 7-15 business days 



Nutrients can freeze when exposed to cold temperatures. We protect your packages by shipping liquid nutrients with heat packs and faster shipping methods during the winter months. Depending on courier, your package may not be sent out until the following Monday to ensure it does not sit in a cold warehouse over the weekend. If your nutrients freeze, simply mix the entire bottle with an equal amount of hot water (preferably reverse osmosis or distilled water) and double your dosage. For detailed information CLICK HERE

Occasionally, our online inventory is inaccurate. In the case we cannot fulfill your order due to an item being out of stock, we will contact you within 24 hours whether to cancel the order or wait for the item to be back in stock. 

We reserve the right to cancel & refund any order where we cannot economically ship to. If this happens you will be refunded in full and notified of the issue. 


Refund Policy


Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. 

To complete your return, we require a receipt or proof of purchase.

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Late Refunds
If you haven’t received a refund yet, first check your bank account again.
Then contact your credit card company, it may take some time before your refund is officially posted.
Next contact your bank. There is often some processing time before a refund is posted.
If you’ve done all of this and you still have not received your refund yet, please contact us at marketing@futureharvest.com.

We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at marketing@futureharvest.com and send your item to: 725 Evans Court, Kelowna, British Columbia, CA, V1X 6G4.

To return your product, you should mail your product to: 725 Evans Court Kelowna British Columbia CA V1X 6G4

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the original cost of shipping will be deducted from your refund, unless you the customer paid the original shipping.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.



Ask a Question
  • Feed, feed, flush. Now for the flush, do you mean a simple watering, or a full on soak and runoff flush?

    Hi Chris,


    For soil and coco growers, we just mean a simple watering (no nutrients), for hydroponic growers it's a little more intensive:


    Flushing for hydroponic growers will involve fully draining your reservoir, cleaning it if necessary, and refilling it with plain pHed water. This water should be pumped through the system, discarded, and the reservoir filled again with straight water. Let this run through for 24 hours before refilling with your nutrient solution. You will have to do this every 1-2 weeks


    For more details on flushing here's a link to our blog https://futureharvest.com/blogs/articles/the-flushing-stage


    Have a great day.

  • Where do I sign up for the club My boss had just told me about the club and Vinny’s tips

    Hi Angel,


    You can join our Growing Group via Facebook. It's called Future Harvest Growing Community. There you'll be able to interact with growers and get useful tips on growing. Or if you just want the Vinny Tips only simply follow us on Instagram @futureharvestdevelopment where we regularly have a tip every 1-2 weeks.

    Thanks for reaching out and have a great day.

  • Can i not feed with the grow and a bottle of calmag?

    Hi Derek,

    You want to make sure to use all three parts of the Holland Tri-Pack as your grow could suffer deiciencies and nutrient lockout if you are missing one part.


    For hydro and coco, you can use Calnesium and Grow together, but for soil you'll only want to mix both of those during the flowering stage. You can refer to the downloads section of our website where you'll find feed schedules to help you out.

    Thanks for the question!

  • I purchase this a couple a weeks ago I’m not understanding the information on how to use and mixing it could I get more information on how to use this product

    Holland Secret (Micro, Grow, Bloom) are meant to be used together throughout your plants entire grow cycle at different concentrations. You can follow our feed chart found under DOWNLOADS (all measurements are in mL per gallon). Holland Secret should be mixed with water (allow time in between adding nutrients for mixing) and fed to your plants. We recommend following a FEED, FEED, FLUSH, rotation. Please email marketing@futureharvest.com or contact us on instagram at @futureharvestdevelopment if you have additional questions or need more information and we can help you out!

  • how often should i feed my outdoor plant in soil and how much per liter.

    Please refer to our feeding chart under downloads for accurate measurements. You should feed your plant every watering, and every third feeding we recommend using just straight pHed water.

  • I am using your nutrients ans wondering if i should skip some days and just feed with water or is it better to just feed with nutrients

    We recommend doing a straight water feeding every 3rd feeding!