FoxFarm Tiger Bloom – Gal

FoxFarm Tiger Bloom – Gal is a phosphorus-rich liquid bloom fertilizer with an NPK of 2-8-4. It is formulated to encourage abundant fruit, flower, and multiple bud development from the first signs of flowering all the way through harvest. The low-pH formula keeps micronutrients available and maintains stability in storage. Tiger Bloom works in both soil and hydroponic systems and can be applied as a root drench or foliar spray, making it a straightforward choice for growers who want a single bloom-stage product that covers multiple application methods.

FoxFarm Tiger Bloom Specifications

Tiger Bloom is a liquid concentrate sold in a 1-gallon container. The table below lists the key specifications derived from the canonical product description and supplier data.

Specification	Value
Brand	Hydrofarm / FoxFarm
NPK Analysis	2-8-4 (Nitrogen–Phosphorus–Potassium)
Container Size	1 Gallon (liquid concentrate)
Formulation Type	Low-pH liquid concentrate
Nutrient Focus	Phosphorus-forward with nitrogen
Application Stage	First flowering through harvest
Dose Rate	2–3 teaspoons per gallon of water
Application Methods	Root drench and foliar spray
Compatible Media	Soil and hydroponic systems
Shipping Weight	10 lb

Why Choose FoxFarm Tiger Bloom

Tiger Bloom addresses a straightforward need: a reliable, concentrated source of phosphorus and potassium to support flowering and fruiting crops from first bud through final harvest. Here is what distinguishes it from generic bloom fertilizers:

• High phosphorus loading (2-8-4 NPK). Phosphorus is the primary driver of flower initiation, root development during bloom, and energy transfer in plant cells. Tiger Bloom’s 8% available phosphate content ensures plants receive adequate phosphorus at a stage when demand peaks.
• Low-pH formulation for storage stability and micronutrient access. The concentrate is acidified to maintain chemical stability over time and to keep trace micronutrients in a plant-available form. This means the product performs consistently whether you open it the day it arrives or months later.
• Dual-use: root drench and foliar application. Most growers apply Tiger Bloom as a soil drench or hydroponic reservoir amendment, but the manufacturer specifically supports foliar use. Foliar feeding can help correct mid-cycle deficiencies quickly because nutrients bypass root uptake pathways.
• Compatible with both soil and soilless growing systems. Tiger Bloom does not require a specific growing medium. It can be added to a recirculating hydroponic reservoir, a drain-to-waste system, or worked into a soil watering schedule without reformulation.
• Supports fruit, flower, and multiple bud sites. The product is formulated specifically to encourage abundant bud development and fruit set, making it appropriate for high-value flowering crops, fruiting vegetables, and ornamental flower production.

For growers who prefer to supplement Tiger Bloom with a biological inoculant, pairing it with a root colonizer such as Advanced Nutrients Tarantula during the transition into bloom can help maximize phosphorus uptake efficiency through mycorrhizal activity.

Best Uses for FoxFarm Tiger Bloom

Tiger Bloom is a bloom-stage fertilizer. It is not a base nutrient and should not be used as the sole nutrition source. It is best deployed as the primary phosphorus input during the reproductive phase of plant growth. The following use cases reflect the product’s formulation and manufacturer guidance:

• Flowering vegetables (tomatoes, peppers, cucumbers). Switch to Tiger Bloom when plants begin to set flowers. The elevated phosphorus supports energy transfer from vegetative tissues to developing fruits. Use at 2–3 teaspoons per gallon throughout the fruiting period.
• High-value flowering crops. For dense-canopy flowering plants that develop multiple bud sites, Tiger Bloom provides the phosphorus load needed to support simultaneous bud development across a large canopy without requiring repeated formulation changes.
• Hydroponic reservoir supplementation. Tiger Bloom integrates into recirculating hydroponic systems as a bloom-phase supplement. Add to the reservoir alongside a base nutrient package once the plant transitions out of vegetative growth. Verify final EC against target ranges for the crop.
• Foliar correction during bloom. If a phosphorus or potassium deficiency is observed mid-cycle and root uptake is suspected to be limited (e.g., due to pH lockout or cold root zone temperatures), dilute Tiger Bloom and apply as a foliar spray to both sides of leaves early in the morning before lights reach full intensity.
• Outdoor and container gardening. Tiger Bloom is equally useful in outdoor raised beds and container gardens. Its liquid concentrate format mixes easily into watering cans and hose-end feeders, making it practical for mixed-crop garden settings where flowering plants need additional phosphorus during summer bloom cycles.
• Companion use with organic soil amendments. When growing in amended soil with products like Down to Earth Crab Meal, Tiger Bloom can supplement slower-releasing organic phosphorus sources during peak flower demand, bridging the gap between organic break-down rates and immediate plant uptake needs.

FoxFarm Tiger Bloom vs Similar Bloom Fertilizers

Tiger Bloom occupies a specific niche: a concentrated, low-pH liquid bloom fertilizer with a phosphorus-forward NPK profile that works across growing media. When comparing it to other bloom-phase products, a few distinctions are worth understanding before purchasing.

Tiger Bloom vs. general-purpose NPK fertilizers. General-purpose balanced fertilizers (e.g., 10-10-10 blends) are formulated to support vegetative growth alongside some flowering. Tiger Bloom’s 2-8-4 ratio deliberately reduces nitrogen and increases phosphorus to reflect what plants actually need once they shift into reproductive growth. Applying a high-nitrogen fertilizer during bloom can promote excessive vegetative regrowth and reduce flower set, so the shift to a bloom-specific formula like Tiger Bloom at the transition point matters.

Tiger Bloom vs. dry phosphorus amendments. Dry bloom boosters such as bone meal or single superphosphate provide phosphorus but release it slowly and inconsistently, particularly in cooler soil temperatures. Tiger Bloom is a liquid concentrate that is immediately available in solution and can be precisely dosed. This makes Tiger Bloom preferable when fast correction or consistent weekly dosing is required, especially in hydroponic systems where dry amendments are impractical.

Tiger Bloom vs. two-part or three-part hydroponic nutrient systems. Purpose-built hydroponic nutrient systems (e.g., General Hydroponics Flora series) already include a bloom component as part of a balanced two-part or three-part schedule. If you are using a full hydroponic nutrient program, adding Tiger Bloom requires careful EC management to avoid over-supplementation. Tiger Bloom is most useful as a standalone bloom fertilizer for growers who want a simple, single-product flowering feed rather than a multi-component schedule.

Tiger Bloom vs. molasses-based bloom supplements. Carbohydrate additives like Earth Juice Hi-Brix Molasses serve a different function: they provide simple sugars to support microbial activity in soil and can contribute to brix in fruiting crops. Tiger Bloom provides macro- and micronutrient nutrition, not carbohydrate supplementation. Many growers use both simultaneously during bloom, with Tiger Bloom handling the nutrient load and molasses supporting the soil biology.

Compatibility

Tiger Bloom is compatible with a broad range of growing setups due to its liquid concentrate format and pH-neutral-to-acidic formulation. The following notes reflect the manufacturer description and general compatibility principles for liquid bloom fertilizers in this class:

Growing media. Tiger Bloom is explicitly formulated for both soil and hydroponic applications. It is appropriate for soil, coco coir, rockwool, perlite, and other soilless media commonly used in indoor and outdoor cultivation.

Hydroponic systems. Tiger Bloom can be used in recirculating deep water culture (DWC), ebb-and-flow, nutrient film technique (NFT), and drain-to-waste drip systems. As with any concentrated liquid nutrient, mix into the reservoir after adding your base nutrients and pH-adjusting your water. Final reservoir pH should be checked after mixing and adjusted to the appropriate range for your crop (typically 5.5–6.5 for most hydroponic crops; 6.0–7.0 for soil).

Compatible with other FoxFarm products. Tiger Bloom is part of the FoxFarm product lineup and is intended to be used alongside FoxFarm’s other products such as Big Bloom and Grow Big as part of a complete feeding schedule. If using with other nutrient brands, monitor EC and pH carefully after mixing to confirm compatibility.

Foliar spray compatibility. Tiger Bloom can be diluted and applied as a foliar spray. Apply to both sides of leaves during the cooler parts of the day (early morning is recommended) to avoid leaf burn from direct light hitting wet foliage. Do not apply foliar sprays when relative humidity is very high, as this slows drying and increases the risk of fungal issues.

Water quality. The low-pH formulation helps maintain micronutrient availability even in moderately hard water. In very high-alkalinity water supplies, you may need to adjust pH downward before or after adding Tiger Bloom to keep the solution within the optimal range for nutrient uptake.

Dosing Guidelines

The manufacturer provides the following guidance for application rates. Always use a calibrated measuring tool (syringe or graduated measuring cup) rather than estimating by eye:

Standard application rate: 2–3 teaspoons (approximately 10–15 mL) per gallon of water. Begin at the lower end of this range (2 tsp/gal) when first introducing Tiger Bloom and increase to 3 tsp/gal once plants have shown a positive response with no signs of nutrient burn.

Timing: Begin using Tiger Bloom at the first signs of flowering. Continue through harvest. Do not use Tiger Bloom during the vegetative stage, as the phosphorus loading is not appropriate for pre-flower growth phases.

Frequency: The manufacturer recommends applying at the rate of 2–3 tsp per gallon with regular waterings during the bloom phase. In hydroponic systems, this means including it in each reservoir fill at the recommended concentration.

Foliar application: For foliar use, dilute Tiger Bloom to 2–3 tsp per gallon and spray both sides of leaves early in the morning. This method is appropriate for correcting visible deficiency symptoms or as a supplemental feed when root delivery is compromised.

Mixing order (hydroponics): When preparing a reservoir, add base nutrients first, followed by supplements like Tiger Bloom. Stir thoroughly after each addition. Check and adjust pH after all components have been mixed. Verify final EC against your target range for the current growth stage before introducing to plants.

General caution: Avoid applying at concentrations higher than 3 tsp per gallon without first testing on a small number of plants. Monitor for symptoms of phosphorus toxicity (dark green or blueish leaf discoloration, reduced growth) or potassium excess, and reduce dose accordingly. Plants showing healthy response at 2 tsp/gal do not need the higher rate.

How to Use FoxFarm Tiger Bloom

1. Identify the transition to flowering. Begin using Tiger Bloom at the first visible signs of flower initiation. For photoperiod crops, this is typically shortly after switching to a 12/12 light cycle. For outdoor and day-neutral crops, watch for bud sites or flower clusters forming.
2. Shake the container thoroughly. Tiger Bloom is a liquid concentrate. Shake or swirl the bottle before each use to ensure any settled components are fully mixed back into solution.
3. Measure the correct dose. Use a calibrated syringe or measuring cup to measure 2–3 teaspoons (10–15 mL) per gallon of water you plan to apply. Do not estimate by pouring freely from the bottle.
4. Add to water, not concentrate to concentrate. Add the measured Tiger Bloom dose to your water or reservoir, not the other way around. This reduces the chance of localized high-concentration exposure to plants or other nutrient components.
5. Mix thoroughly and check pH and EC. Stir the solution well after adding Tiger Bloom. Check the pH of the final solution using a calibrated meter and adjust to your crop’s preferred range (soil: 6.0–7.0; hydroponics: 5.5–6.5). Check EC to confirm you are within target range for the bloom stage.
6. Apply to root zone or as foliar spray. For root application, water plants normally with the mixed solution. For foliar application, load the solution into a clean sprayer and apply to both sides of leaves early in the morning. Ensure good coverage but avoid runoff pooling on foliage.
7. Monitor plant response. Observe plants over the following days for signs of positive response (robust bud development, healthy leaf coloration) or stress (tip burn, discoloration). Adjust dosage in the next feeding if needed.
8. Continue through harvest. Tiger Bloom is designed for continuous use through the end of the flowering cycle. Cease application only during a final flush period (if applicable to your growing method) in the last week or two before harvest.

Sources & Further Reading