If you’re not flushing your hydroponic plants before harvest, you need to read this guide. If you’re already flushing before harvest, then keep reading because you’re sure to pick up a few techniques, tips and strategies that can really maximize your results! Plus, if you’re flushing incorrectly, you could be starving your plants. So let’s get into it. What if there was one thing you could do immediately before harvest that would dramatically improve the quality and size of your harvests regardless of the strain, medium, or nutrient solution you were using? Experienced growers recognize the advantages of flushing on a regular basis; this will result in a super healthy plant that is always ingesting fresh nutrients in the proper amounts.
Doesn’t that sound like a magic trick? However, it turns out that such a method exists. We’ll talk about flushing in today’s topic, including:
- What is flushing?
- Why should you flush?
- When should you flush?
If you haven’t started flushing yet, you should read this guide before harvesting. If you’re flushing before harvest, keep reading because you’ll learn a few approaches, suggestions, and strategies that can help you get the most out of your crop. You could also be starving your plants if you flush them wrongly. Let us begin.
What Is Flushing?
Flushing is the process of trying to drain out all of the excess salts, excess nutrients, and other pollutants that build up in your plants days before harvest. Most farmers flush their beautiful plants by giving them plain water without nutrients for a specific amount of time.
It works to wash off the buildup of salts by watering as usual but without nutrients. Plant health is dependent on the state of your grow material, reservoir, pump, feed lines, and drip emitters.
Flushing is a simple and inexpensive method of improving the quality of your final harvest. Because plants take compounds from nutrition, water, and the atmosphere in the same way they absorb nutrients, they accumulate excess salts and other harsh compounds.
You risk compromising the final quality of your crops if you don’t wash out these surpluses weeks before harvest.
Here are some of the claimed advantages of flushing your plants:
- Can improve the end product’s smoothness and minimize harshness
- Can aid in the removal of any chemical flavors from the finished product.
- Increased terpenoid synthesis due to a slight nutritional stress
- The final bud swells increased in the days leading up to harvest.
- You can improve the smoothness of the final result by getting rid of extra nutrients leftover from the developing process.
- You can remove the chemical taste from your crops.
It’s also worth noting that after the flush, you’ll see a rise in bud size and terpene production because your plants will have more energy to allocate to swelling buds and terpene production. They don’t have to use energy to consume the amounts of nutrients you regularly provide.
In the end, most farmers flush to boost the potency, taste, scent, size, and general quality of their harvest.
Should You Flush? Should every grower flush their fields before harvest?
The good news about flushing is that it’s a strategy that works regardless of the sort of grower you are or the strains you’re producing.
Flushing, for example, will provide the same benefits to your crops if you’re an outdoor planter utilizing any type of soil as your growing medium.
You can also flush and increase the quality of your harvests if you’re growing inside and using coco coir, perlite, or other growing mediums in addition to hydroponics. If your plants experience nutrient burn or toxicity in the middle of their vegetative phase, flushing with fresh water is a good approach to remove those nutrients and start over with a healthy dose.
The primary distinction is that the length of your flush must be adjusted based on how you’re growing. Here are a few quick pointers:
- Flushing should take 1–2 weeks for soil growers.
- Hydroponic growers of coco coir should flush for a shorter period of time, perhaps a week before harvest (be careful not to let your plant turn yellow too quickly, as coco does not hold on to as many excess nutrients).
- Deep water culture (DWC) and other hydroponics growers should flush for the shortest period possible, 1–2 days because the plants will have no access to residual nutrients right away.
When Should You Flush?
Wait until the harvest window before starting your flush. You can lower yields and potency by flushing your plants too early. You’ll be depriving them of the nutrition they require at just the wrong time. Additionally, if your plant experiences nutrient lockout due to an excess buildup of nutrients in your growing media, you may need to flush it. This nutrient build-up also promotes algal growth, which is undesirable in hydroponic systems.
So, how can you know when your plants are ready to be harvested?
If the flowering cycle is eight weeks, flushing should begin six weeks after the flowering stage begins, when the trichomes begin to produce a cloudy white tint.
Examine the glandular stalks trichomes (a.k.a. resin glands) of your plants with a magnifying glass to see whether they are mature and ready to harvest. On well-cultivated buds, these trichomes resemble crystals or frost.
Trichomes ripen and change color. They start out clear, then become translucent (or milky white), and lastly amber. When nearly half of the trichomes on your plant have turned a milky-white, translucent tint, you’ll get the optimum effects. The majority of strains are ripe at this point.
Flushing over an extended period of time or starting too early might reduce yields and cause an undesirable nutrient deficiency. When in doubt, Just a little bit longer. To summarize, it is preferable to wait a bit longer than flush too soon.
The purpose of the flush is to remove any additional or excessive impurities from the finished product. When you flush with plain water, you’re effectively washing the plant, root system, and growing medium to get rid of the excesses.
When you flush with plain water soon before harvest, you’re essentially starving your plants of nutrients, which can prevent you from getting the last-minute robust floral development and resin production you want. Use a TDS reader to determine the total dissolved solids and the purity of the water discharge to ensure the flush was successful. Always remember to flush your beneficial microbes whenever you flush.
So there’s a better approach to ensure that extra contaminants are removed from your plants while also ensuring that your plants are not starved.
You now know how to flush your crops for maximum yields and potency.
Flushing your crops before harvest, as you’ve learned today, is a simple technique to increase the quality of your finished product. There are numerous advantages to flushing, regardless of the strain you’re growing or how or where you’re cultivating it.