Newmarket, Ontario (Head Office)
1175 Stellar Drive, Unit #5
Newmarket, ON L3Y 7B8
- Mon10:00am–6:00pm
- Tue10:00am–6:00pm
- Wed10:00am–6:00pm
- Thu10:00am–6:00pm
- Fri10:00am–6:00pm
- Sat10:00am–4:00pm
- SunClosed
$0.00 CAD
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House & Garden Bud-XL is a proprietary flowering additive blend that supports the transfer of natural plant sugars to flowering sites for stronger mid-to-late bloom performance. It’s a bloom-stage nutrient additive built for growers who want more focused energy delivery where flowers and fruits are forming.
Bud-XL is designed to provide key soluble nutrients that support sugar transport required for flowering. By helping move natural plant sugars from the leaves to the flowering sites, it reinforces the plant’s own energy flow during the fruit/flowering stage. This targeted sugar transfer supports growth and vigor when plants are shifting from building structure to building flower mass.
The performance focus is clear and practical. Bud-XL is positioned to enhance flower size and density, helping flowers develop with more substance through the finishing stretch of bloom. It’s also described for improving aroma and flavor, a benefit many growers look for when quality matters as much as production. Alongside those quality traits, Bud-XL is intended to help drive high yields of high-quality flowers and fruits by supporting the sugar transport needed for strong flowering development.
Nutritionally, Bud-XL is described as an essential blend of water-soluble nitrogen and soluble potassium, supplying essential macronutrients that support key enzymatic processes tied to sugar movement and flower building. The listed inputs are ammonium nitrate, nitric acid, and potassium hydroxide, presented as the foundational sources behind its soluble nutrient profile.
Bud-XL supports mid-to-late flowering stages and is positioned for mid-flower through harvest timing, making it a straightforward finishing additive when your goal is to keep plants pushing through bloom without losing momentum. It works in all growing media, with compatible systems specifically noted as hydroponics and soil, so it fits neatly into a wide range of grow styles without changing the overall direction of your base program.
For growers who care about clean formulations, Bud-XL is stated to contain no dyes, no synthetic PGRs, and no detectable heavy metals. Those differentiators pair well with its core purpose: a flowering additive that helps transfer sugars to flowers, supports flower size and density, and improves aroma and flavor during the bloom window.
House & Garden Bud-XL is a good fit for growers focused on mid-to-late flowering results who want a sugar-transport-driven bloom additive for hydroponics, soil, or other media, with a clean-input profile and a clear finishing-stage role.
Step-by-step mixing and feeding instructions for House & Garden Bud XL - 5 Litre.
Fill your reservoir or watering container with clean, room-temperature water first. Shake the bottle of House & Garden Bud XL - 5 Litre well before every use. Using the feeding schedule below, measure the recommended dose and add it directly to the water while stirring. Allow the solution to mix fully before adding any other fertilizers, additives, or supplements.
Always add nutrients to water — not the other way around. Mix thoroughly between products to ensure an even, stable nutrient solution.
Vegetative stage — Bud-XL
Flowering stage — Bud-XL
Warning – Important Safety Information
This product may cause mild skin irritation and eye irritation. Avoid unnecessary contact with skin, eyes, and clothing. Use only as directed.
General safety precautions
Read and follow all instructions on the product label and any accompanying documentation before use. Keep out of reach of children and pets. Do not ingest. Avoid breathing vapours, mist, or dust that may be generated during handling or use.
Wear appropriate personal protective equipment (PPE), such as protective gloves, long sleeves, long pants and closed-toe footwear. When there is a risk of splashing or airborne particles, use safety glasses or other suitable eye and face protection.
First aid – skin contact
IF ON SKIN OR HAIR: Remove contaminated clothing immediately. Rinse skin with clean water for several minutes, then wash with mild soap and water. If irritation or redness develops and persists, seek medical attention. Wash contaminated clothing before reuse.
First aid – eye contact
IF IN EYES: Rinse cautiously with clean water for several minutes, keeping eyelids open. Remove contact lenses if present and easy to do. Continue rinsing. If irritation persists, obtain medical advice.
First aid – ingestion and inhalation
IF SWALLOWED: Rinse mouth thoroughly with water. Do not induce vomiting unless instructed by a medical professional. Seek medical attention if you feel unwell.
IF INHALED: Move the person to fresh air and keep them comfortable for breathing. If coughing, breathing difficulty, dizziness or other symptoms occur, seek medical assistance.
Storage and handling
Store this product in its original closed container, in a cool, dry and well-ventilated area. Protect from extreme temperatures and direct sunlight. Keep container tightly sealed when not in use.
Avoid release to drains, natural waterways or outdoor soil. Dispose of unused product and empty containers in accordance with local regulations and the directions on the label.
Important: If medical advice is needed, keep the product label or container available. Always follow the specific instructions and safety recommendations provided by the manufacturer. This safety notice is intended as general guidance and does not replace official label directions or documentation.
| Total Nitrogen (N) | 0.4% |
|---|---|
| Ammoniacal Nitrogen (N) | 0.02% |
| Nitrate Nitrogen (N) | 0.38% |
| Soluble Potash (K2O) | 0.2% |
Ammoniacal Nitrogen (N) is a plant-available form of ammonium (NH₄⁺) that provides a steady, gentle source of nitrogen for healthy green growth. Unlike fast-release nitrogen types, ammoniacal nitrogen feeds plants slowly, helps stabilize root-zone pH, and works well in cooler temperatures. It is commonly used during early vegetative growth because it supports strong leaf development without burning young roots. If plants show pale leaves, slow growth, or weak stems, they may need more available ammoniacal nitrogen.
Ammonium nitrate is unique because it provides nitrogen in two plant-usable forms at once, which can give a fast green-up while still supporting steadier uptake depending on the root-zone conditions. That matters because it can correct true nitrogen shortages quickly, but it also needs careful balance since too much can push overly soft growth and trigger pH drift and nutrient imbalances.
Nitrate Nitrogen provides a stable, easy-to-absorb form of nitrogen that supports steady growth, strong foliage, and reliable plant development without sudden nutrient swings.
Soluble potash (K2O) is important because it helps plants control water use, move sugars to new growth and fruit, and build stronger, higher-quality structure under stress. It’s unique from many other nutrients because it acts more like a regulator and transport helper than a direct “building material,” so the biggest benefits show up as steadier growth, stronger stems, and better finishing instead of just bigger leaves.
Total Nitrogen is important because it directly drives leafy growth, chlorophyll production, and overall growth speed, which sets the pace for the entire plant. It’s unique because the “total” number can include different nitrogen forms that behave differently in the root zone, meaning the same total amount can produce very different results depending on the nitrogen type and plant stage.
Nitric acid lowers pH, but it also adds nitrate nitrogen once diluted, so it can influence both nutrient availability and the plant’s growth balance. That makes it important for stable uptake, and unique compared to acids that adjust pH without contributing nitrate.
No, potassium hydroxide is mainly a strong pH-raising ingredient that changes how nutrients behave and how roots can access them, and its potassium addition is usually secondary. It’s important because stable pH prevents false deficiency symptoms and uptake stress, and it’s unique from other potassium sources because it’s used for acidity control rather than primarily for plant nutrition.

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