Hydroponic Avocado Growing: Unlock The Secrets To A Thriving Tree!

Written by Linus Li


Posted on June 26 2023


  1. Introduction
  2. Choosing an Avocado Seed
  3. Setting Up The Hydroponic System
  4. Light and Temperature
  5. Nutrients
  6. Water and Maintenance
  7. Transplanting
  8. Maturity and Harvest
  9. Troubleshooting
  10. Conclusion


Growing avocados hydroponically is a fun and rewarding experience for any gardener. Avocados are a great candidate for hydroponic systems because they require consistent moisture and nutrients, are low maintenance, and produce large fruits. Successfully rooting your own avocado seed and watching the tree flourish can provide fresh, organic fruit for years to come.


Hydroponic Avocado Growing


Choosing an Avocado Seed

The first step is choosing an avocado seed to grow. Select one from a large, mature avocado that's preferably a Hass variety. The seed should be at least 2 inches long. Soak the seed for about two weeks, changing the water every few days to initiate root growth and soften the seed coat.

Hydroponic Avocado Growing

Setting Up The Hydroponic System

Once the seed has begun to sprout, you're ready to set up your hydroponic system. An ebb and flow or deep water culture (DWC) system will work well. Place the seed in a net pot filled with hydroponic clay pellets or perlite and suspend the pot in the reservoir. Fill the reservoir with water and nutrients just below the net pot level.

Light and Temperature

Next, be sure to provide the ideal conditions for your young avocado plant. Avocados require plenty of bright, indirect light to grow properly. Provide 14 to 16 hours of light daily from grow lights or a sunny window, keeping the light source about 2 to 3 feet from the plant. Keep temperatures between 65 and 85°F for optimum growth, adjusting your lighting and heating as needed. Lower temps may slow growth, while higher temps could damage the plant.


Now for the fun part - feeding your growing avocado! Avocados need plenty of nutrients, especially potassium, and phosphorus, so add hydroponic nutrients made for fruit and flowering plants. Test and adjust the pH and EC/PPM levels of your reservoir often, aiming to keep pH between 5.5 to 6.5.

Water and Maintenance

Top off your reservoir with fresh water and nutrients as the roots uptake the solution. This could be every few days to once a week, depending on the size of your system.


Keeping an eye on that little avocado tree as it grows will be so rewarding, my friend! Check those roots regularly for any signs of pests or damage, and trim any roots that become too dense or tangled. As the roots fill the net pot, you may need to transplant the tree to a larger container. Just make sure to disturb the roots as little as possible during the move.


Hydroponic Avocado Growing


Maturity and Harvest

Avocado trees can take between 2 to 10 years before producing fruit, so patience is key! Look for signs like thicker trunks, leaf enlargement, and flower buds forming. But for now, just enjoy watching this cute little seed becomes a beautiful tree - slow and steady growth is the goal at this stage!


Issues can pop up as your avocado grows, my friend, but with diligence and care, you can troubleshoot any problems. Root rot from overwatering is common - just trim affected roots and improve drainage. Nutrient deficiencies show in discolored or stunted leaves - adjust pH and nutrient levels to correct. And if you see any pests, isolate the plant and treat it with neem oil or insecticidal soap.

Any pests that emerge, like aphids or whiteflies, can quickly spread if left unchecked. Isolate the affected plant from others as soon as possible and treat pests with natural oils like neem oil or insecticidal soap to avoid damaging the plant with harsh chemicals. Repeated treatment over at least two weeks may be needed to fully eliminate some problems.


Hydroponic Avocado Growing



In summary, my friend, growing avocados hydroponically can be a tremendously satisfying experience - even if fruit takes years to produce!

The key takeaways are: choose a large, mature seed; provide the ideal conditions for root and shoot growth; maintain proper pH and nutrient levels; inspect and prune roots regularly; be patient as the tree matures; and troubleshoot any issues that arise.

But most importantly, have fun watching this little seed transform before your eyes. The journey is the reward, so enjoy every step of the way!

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