Learning to use the General Hydroponics Flora Series is a rite of passage for many home gardeners, as this foundational 3-part nutrient system is one of the first you’ll encounter when diving into hydroponics.
Seeing those three iconic bottles—FloraGro, FloraBloom, and FloraMicro—might seem intimidating at first, but this powerful hydroponic fertilizer trio is the secret to creating a custom feeding schedule.
This hydroponics fertilizer allows you to provide the precise N-P-K ratios and essential micronutrients your plants need through every stage of growth, from vegetative to flowering.
This system is beloved because it’s not a one-size-fits-all plant food; it’s a complete, customizable toolkit for your nutrient solution!
This flexibility allows a grower to craft the perfect feeding schedule for specific plant genetics and hydroponic systems, whether it’s a Deep Water Culture (DWC) bucket, a recirculating drip system, or an Ebb & Flow table.
Let’s break down this trio, and you’ll see just how simple and rewarding mastering this liquid nutrient concentrate can be.
The Beauty of a 3-Part System: Total Nutrient Control
The primary advantage of a three-part nutrient system over a single bottle is precise control throughout the plant’s life cycle. The nutritional requirements of a plant change dramatically from one phase to the next.
A young lettuce or basil plant in its vegetative stage craves high levels of nitrogen for rapid foliar growth, while a tomato or pepper plant entering the bloom phase demands more phosphorus and potassium to develop flowers and fruits.
A single-part nutrient provides a fixed ratio that cannot adapt to these specific needs, potentially leading to deficiencies or waste.
The Flora Series empowers you to act as a personal chef for your plants. By adjusting the ratios, you can create a tailored nutrient recipe for vegetative growth, a separate one for the transition to flower, and another for full fruit production.
This level of control helps prevent common issues like nutrient burn and deficiencies, supports vigorous root development, and ultimately maximizes your final yield.
Getting to Know the General Hydroponics: Meet the Flora Family
The synergy between these three General Hydroponics Flora Series formulas is where the magic happens. Each liquid concentrate has a specific function, and understanding their roles is fundamental to unlocking your garden’s potential.
1. FloraMicro: The Foundational Multivitamin
FloraMicro is the cornerstone of the feeding schedule, providing essential nitrogen, potassium, and crucial calcium.
Its most vital contribution is the full suite of chelated micronutrients—like iron, copper, and manganese—which ensures immediate availability for plant uptake.
These trace elements are critical for complex internal processes, from chlorophyll production for photosynthesis to vital enzyme functions. It forms the stable foundation of every nutrient solution you will mix.
2. FloraGro: The Engine for Vegetative Growth
During the vegetative stage, when plants are focused on building a robust framework of leaves and stems, FloraGro is the primary fuel.
It is rich in nitrogen (the “N” in N-P-K) and potassium, which work together to drive vigorous structural and foliar growth.
This formula is responsible for creating the dense canopy on your herbs and greens, effectively building a powerful solar panel factory on fruiting plants to energize future development.
3. FloraBloom: The Flower and Fruit Powerhouse
Once plants receive the signal to start producing, their energy and nutritional needs shift. FloraBloom is formulated with high concentrations of phosphorus (P) and potassium (K), along with magnesium.
Phosphorus is critical for energy transfer, promoting strong root development, and initiating the flowering process. Potassium is essential for improving the overall quality, flavor, density, and even essential oil production in flowers and fruits.
This is your go-to concentrate for achieving a bountiful and high-quality harvest.
The Gardener’s Recipe: How to Mix the Flora Series Correctly
Properly mixing your hydroponic nutrient solution is a critical step. The key is to vary the ratio of the three parts based on your plant’s specific life stage, following a reliable feed chart.
Always begin with a clean reservoir filled with fresh water. The single most important rule, which prevents most mixing issues, is: Always add FloraMicro to the water first and allow it to dissolve completely.
Mixing the concentrates in the wrong order can cause a chemical reaction that leads to nutrient lockout. This is where essential minerals, particularly calcium from FloraMicro, bind with sulfates in the other formulas.
This reaction forms precipitates—solids that fall out of the solution—making these vital nutrients unavailable for your plants to absorb.
A simple mantra to remember is: “Micro first, then Gro, then Bloom, with a good stir in between”.
- Add FloraMicro to your reservoir of fresh water and stir thoroughly.
- Add FloraGro and stir again until fully dissolved.
- Finally, add FloraBloom and give it one last good stir.
Never combine the three nutrient concentrates directly together in their undiluted form.
Simplified General Hydroponics Flora Series Recipe in teaspoons
While General Hydroponics provides detailed feed charts (often in milliliters per gallon) which should be your primary guide, here is a simplified recipe in teaspoons to illustrate how the ratios change.
- Seedlings & Cuttings: Start with a gentle solution. ¼ tsp Micro, ¼ tsp Gro, ¼ tsp Bloom.
- General Vegetative Growth: 1 tsp Micro, 1½ tsp Gro, ½ tsp Bloom.
- Transition to Flower: 1 tsp Micro, 1 tsp Gro, 1½ tsp Bloom.
- Full Bloom & Fruiting: 1½ tsp Micro, ½ tsp Gro, 2 tsp Bloom.
As you can see, FloraGro is dominant during the vegetative stage, while FloraBloom takes over for flowering, with FloraMicro remaining a vital presence throughout.
Beyond the Bottles: Managing pH and EC/PPM
Mixing the perfect nutrient solution is only effective if your plants can absorb it. To ensure optimal nutrient uptake, you must monitor and manage the pH and Total Dissolved Solids (TDS) of your water.
1. pH Level
pH Level measures the acidity or alkalinity of your nutrient solution. For most plants in hydroponic systems, the ideal pH range for nutrient absorption is between 5.5 and 6.5.
If the pH drifts outside this range, nutrient lockout can occur even with a perfectly mixed solution.
A reliable digital pH pen and a pH control kit (containing pH Up and Down solutions) are essential tools for making adjustments.
2. EC and PPM/TDS
Electrical Conductivity (EC) and Parts Per Million (PPM) are two different scales that measure the same thing: the total strength, or concentration, of your nutrient solution (also known as Total Dissolved Solids or TDS).
A low reading indicates a weak solution and hungry plants, while a high reading can cause nutrient burn, identifiable by brown, crispy leaf tips.
A quality TDS/EC meter is critical for knowing when to add more nutrients and when a full reservoir change is necessary.
Always remember to calibrate your meters regularly according to the manufacturer’s instructions to ensure you are getting accurate readings.
Your Path to a Bountiful Harvest
The General Hydroponics Flora Series has been a trusted staple for decades because it is reliable, effective, and wonderfully versatile. While the three bottles might seem complex initially, they are a powerful tool that puts you in complete control of your garden’s nutritional health.
This is a system that grows with your skills. Soon, you’ll move beyond simply following a chart and start to anticipate your plants’ needs by “reading the leaves”. You will learn to spot deficiencies, identify the start of a bloom phase, and tweak the nutrient ratios to see your plantsconnect with your garden.
Don’t be afraid to start simple, follow the General Hydroponics Flora Series feed chart, and enjoy the process. You’re giving your plants everything they need to thrive, and the rewards are well worth it.
Happy growing!
Common FAQ For Flora Series
Q: How often should I change my reservoir?
For most hydroponic systems, a complete nutrient solution change every 7-10 days is best practice. This prevents the buildup of unused mineral salts and pathogens, ensuring the nutrient solution remains fresh and perfectly balanced for your plants.
Q: Can I use the Flora Series in soil or coco coir?
Absolutely… While formulated for hydroponics system, it is an excellent liquid fertilizer for soil and soilless mediums like coco coir. In these mediums, you will typically feed less often, for instance, with every other watering, allowing the medium to dry slightly in between.
Q: What if my tap water is very hard or I use RO water?
General Hydroponics offers a Hardwater version of FloraMicro, specifically formulated for water with high mineral content (over 200 PPM or 0.4 EC). Conversely, if you use Reverse Osmosis (RO) or distilled water, which is stripped of all minerals, you may need to add a Cal-Mag supplement to compensate for the lack of calcium and magnesium.
Flora Series Fertilizers From General Hydroponics
The General Hydroponics Flora Series is a reliable and effective choice for hydroponic farmers seeking a comprehensive nutrient solution.
Its three components, FloraGro, FloraBloom, and FloraMicro, provide the necessary nutrients for plants at different growth stages, resulting in increased nutrient uptake, improved yield, and healthier plants.
By utilizing this well-balanced system, hydroponic growers can optimize their crop production and achieve outstanding results.
