GROTEK_Blossom_Blaster_PRO_1_L
Roll over image to zoom in Click on image to zoom
GROTEK_Blossom_Blaster_PRO_1_L

Grotek Blossom Blaster Pro 1L (1-4-0)

Save 21%
GrotekSKU: GSP-770006193
$ 25.95 $ 32.97
🍃 Earn 25 GrowClub points worth $0.26 off your next order
  • Free Shipping over $149.99 Canada-wide
  • Ships discreetly
  • Ships in 3-5 business days
Bulk / Commercial Discounts and Rebates

Email us or call 888-349-0321 TODAY!

Grotek Blossom Blaster Pro 1L (1-4-0)

Grotek Blossom Blaster Pro 1L (1-4-0) is a concentrated early-flower development supplement designed to support profuse blooms, flower production and strong fruit set. Formulated with a unique phosphorus nutrient complex and key micronutrients, Blossom Blaster Pro helps optimize conditions during the important transition into flowering.

This liquid bloom additive is ideal for growers who want targeted support during floral initiation, bud break and early fruit development. With a low application rate and a high-impact formula, Grotek Blossom Blaster Pro fits easily into professional feeding programs for hydroponic, soilless, peat and coco-based systems.

Why Choose Grotek Blossom Blaster Pro 1L

  • Concentrated early-flower development formula
  • NPK formula: 1-4-0
  • Supports profuse blooming and flower production
  • Helps optimize conditions for improved fruit set and harvest quality
  • Designed for use during floral initiation and bud break
  • Contains phosphorus plus important micronutrients
  • Supports key plant processes related to flower development
  • Can be used as a foliar spray or root-zone feed
  • Compatible with hydroponic and soilless systems
  • Suitable for peat and coco-based growing media
  • Low application rate for efficient use
  • Convenient 1L liquid format

Early Flower Development Support

Grotek Blossom Blaster Pro is designed for the early bloom stage, when plants begin shifting energy toward flower and fruit production. This is a key transitional period where targeted nutrition can help support flowering sites, cellular activity and overall plant development.

Its phosphorus nutrient complex helps supply an available form of phosphate, while added micronutrients such as iron, zinc, boron and molybdenum help support important plant functions during the flowering transition.

Ideal For

  • Early flowering stage
  • Floral initiation
  • Bud break
  • Flower production
  • Fruit set
  • Hydroponic systems
  • Soilless media
  • Peat-based growing
  • Coco-based growing
  • Indoor gardens
  • Greenhouse crops
  • Growers using complete nutrient programs

Guaranteed Analysis

  • Total Nitrogen (N): 1.0%
  • Available Phosphoric Acid (P₂O₅): 4.0%
  • Boron (B) actual: 0.02%
  • Molybdenum (Mo) actual: 0.01%
  • Zinc (Zn) actual: 0.2%
  • Iron (Fe) actual: 0.25%

Derived From

  • Phosphoric acid
  • Urea
  • Ferrous sulfate
  • Zinc oxide
  • Sodium molybdate
  • Boric acid

How to Use

Begin using Grotek Blossom Blaster Pro during floral initiation, before or at bud break. Apply 2–3 times per crop cycle, between bud break and fruit set.

Foliar Spray:

  • Mix 0.5 mL per 1 L of water
  • Imperial equivalent: 1/8 tsp per 1.25 qt of water
  • Spray plant foliage evenly
  • Apply according to crop needs and label directions

Soil, Soilless and Water Culture:

  • Mix 1 mL per 1 L of water
  • Imperial equivalent: 1/4 tsp per 1.25 qt of water
  • Adjust pH after mixing as needed
  • Apply as part of a balanced feeding program

Important Use Notes

  • Start use during floral initiation, before or at bud break
  • Apply 2–3 times per crop cycle between bud break and fruit set
  • Adjust pH after mixing if needed
  • Use with a complete base nutrient program
  • Avoid over-application due to the concentrated formula
  • Follow the product label for crop-specific recommendations
  • Store according to the manufacturer’s instructions

Concentrated Bloom Support for Better Flowering

Grotek Blossom Blaster Pro 1L (1-4-0) is a smart choice for growers looking to support early bloom development, flower production and fruit set. With its unique phosphorus nutrient complex, added micronutrients and flexible foliar or root-zone application, Blossom Blaster Pro helps provide targeted support during one of the most important stages of the crop cycle.

Note: Always follow the product label and Grotek’s official recommendations for proper dosage, application timing, compatibility, pH adjustment and storage.

Order Confirmation

As soon as your order is placed, an order confirmation will be sent to the email address you used to place the order. This means we have received your order and payment. Payment is captured as soon as the order is placed. In rare cases, if the product is on backorder or unavailable, we will contact you and ask if you would like to wait for the product to become available, switch your product, or have your payment refunded. If the item is available for shipment we will submit the order for processing and arrange shipment. Please see current estimated lead times on the product page for each product.

Shipping

Most products ship within 1 to 3 business days. Some items might take longer as they are delivered from our warehouse in Vancouver. As soon as we receive your tracking number, we will send it over to you.

Free Shipping

Free shipping is available across all provinces throughout Canada for orders over 149$.

International Orders

Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or other couriers. Most quotes can be obtained at checkout. If not, you can email us at info@canadagrowsupplies.com for some more information on shipment. Items shipped internationally from the USA may have VAT, duties, taxes, and/or local charges due at delivery. These charges are the responsibility of the customer and not Canada Grow Supplies Inc.

Cancellations

If you need to cancel your order, we recommend reaching out to us ASAP. We charge a 2.9% (credit card), 3.5% (PayPal), 4.0% (PayPal International), 4.1% (American Express), or 6.5% (Shop Pay Installments or Sezzle) order cancellation fee after the order was received. We can accommodate most requests, but due to the different time zones and schedules that our warehouses ship from, sometimes the cancellation request may not reach the warehouse in time before the product ships. Once the item has been arranged to ship or has shipped, the package will be treated like a 'return' and is subject to ship-back fees and restocking fees. If you purchased 'Route Package Protection', this can not be refunded after the order has shipped.

Returns

In order to make sure you are completely satisfied, we can send you a return label within 14 days of receiving the order. This is to guarantee that you are happy with the product. Some products might require a 10-25% restocking fee. Please visit our full return policy.

Why Canada Grow Supplies?

We’re glad you clicked here. It means you’d like some reassurance and we totally understand that.

1. We’ve had thousands of shipped orders and satisfied customers.

We started our business in 2020 with the intention of creating a one-stop shop for growing supplies without letting customers wait for their orders. We saw the potential to serve customers of this industry way better than they’ve been treated in the past.

2. We’re a small, Canadian, family-owned business.

Our small team overlooks every customer and their orders to ensure they are satisfied with their products. We answer the phone and website chat, and if we don’t, we get back to you within 6 hours or less! We even throw in some freebies at random.

3. Free Discreet Shipping Available in Canada

We offer free shipping on all orders over 149$ Canada-wide. Many companies have a weight limit for free shipping, we don’t!

4. 100% Lowest Price on the Market - Price Match Guarantee

We keep the best prices on the market at all times. If the price respects the companies’ lowest retail price, we will definitely price-match any other Canadian website.

5. Reliable International Shipping

Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or similar couriers. Go through the checkout process to receive a shipping quote or contact us if a shipping quote is not available at checkout.

6. Easy financing and interest-free payments

Finance your purchase within minutes without paying interest!

Sezzle: Buy what you want today and pay for it over four installments, interest-free. Look for the Sezzle button at checkout. Get approved up to $2,500.

7. We are authorized resellers with manufacturer’s warranty

You will buy confidently from us since only sell new, official products (no used items or clones). All warranties are new are 100% honored through the respective manufacturer.

8. Safe, Secure and Discreet Transactions

We accept major credit cards and debit cards, PayPal, Google Pay, Apple Pay, Sezzle, bank transfers, and money orders. All card payments are processed through our encrypted SSL security processing system. Your identity is always protected.

9. Hassle-free returns

Just in case your purchase was not up to your standards, we offer return shipping if you are not 100% satisfied for any reason

10. Route Package Protection

Adding Route Package Protection to your order at checkout means that your order is protected against being lost, damaged, or stolen. In the unfortunate instance that you experience one of these inconveniences, you can report an issue with Route and they will work with you to make sure you get the resolution you prefer.

Recently viewed