% of people told us that this article helped them. * Are very easy to grow and taste amazing!!! Last Updated: September 5, 2020 All you need for your lettuce growing system is four polystyrene panels stacked on top of a shallow container filled with nutrient solution. The summer temperatures where I live are regularly above 90F, so I lower my EC gradually to 0.9 for the summer. When it comes to lighting, no one has an accurate answer. You can grow most varieties of lettuce hydroponically. Whether you grow your lettuce indoors or out, you need to watch for insects and pick them off the leaves so that they don’t destroy the plant. The nutrient solution should not be too concentrated for lettuce. Plants may be grown in a nutrient solution only (liquid culture) or they may be supported by an inert medium (aggregate culture). Plant resistant varieties, including ‘Magenta’ and ‘Ermosa’, a butterhead bred for heat tolerance. I use indoor LED lights. Check the water level daily; your lettuce will not grow if the roots are not getting water. Problem: Your lettuce is shot through with tiny holes. To prevent bitterness, keep the soil evenly moist and harvest plants before they begin to form a conical head. The ideal water temperature for hydroponic lettuce is between 20 to 25 degrees celcius. In that time, the seeds should sprout into little seedlings. I have been to many hydroponics stores and seen almost all the lettuce hydroponics videos on youtube. How much water does hydroponic lettuce require? What is the hydroponic mixture? If you want to attempt to save your dying crop, switch out the water and nutrient combination that you currently have and replace it with the new one. During the summer months, stick to the loose leaf varieties. Is hydroponic lettuce free of pesticides? Grow lettuce seedlings outside of the water culture system, and once they are around 2 inches tall, transplant them into a net pot and place the pot in the reservoir. The best EC value for growing lettuce is about 1.4 mS/cm. Row covers also help control thrips, leaf hoppers and aphids. They would probably grow a bit faster under a grow light, but that’s not part of this experiment. So far, I’ve had to add nutrients twice in 6 days. Consider taste, mature plant size, and nutrition information (check out our review of the best hydroponic nutrients! We chose to grow iceberg lettuce hydroponically. Ensure that you re growing your lettuce in a cool space – hot temperatures are known to hold lettuce growth. Lettuce is harvested prior to bolting, or flowering, since during that time … The ratios are provided by the nutrient providers, so follow them specifically. What is the sweet spot for lettuce in terms of EC? The best thing about it is that it grows rapidly. A head of hydroponic lettuce grows from seed to harvest in 35 days, making it a … How to Grow Hydroponic Lettuce: Step by Step Choose your lettuce variety and purchase your seeds. During most times of the year, beneficial insects quickly control aphids. Earlier or later depending on the desired size of the harvested lettuce. Single-leaf lettuce plants should be 4 inches (10.2 cm) apart. If you want to grow hydroponic lettuce, pick a lettuce variety and a water culture system for your setup, such as NFT or Ebb and Flow. Nearly all problems you may encounter when growing lettuce are caused by hot weather. PH 6 is good for lettuce, and as for salt between 700 and 1000 ppm for lettuce is ideal. Lettuce grown hydroponically in Mr Stacky Tower Gardens; * Grows best in the cooler months * Needs full sun during winter (min 4-6 hours p/day) and shaded sun during summer * Should be continually planted at intervals of 3 weeks to ensure a continuous harvest iceburg, cos/romaine, butter) is 28°C. Now I have bought a Light Meter, to test various lights. Diagnosis: Your plants are old, bolting, or drought-stressed. For an early start, seeds can be started in flats 4 weeks prior to the last frost and transplanted outdoors in mid to late spring. Set up your hydroponic system, tend to the plants, and harvest your first crop of lettuce in a matter of weeks. If you don't remember which nutrients you were successful with, it's always a safer bet to purchase a nutrient kit from a gardening store. Indoor lighting The hydroponic solution is a nutrient solution that contains all the nurtrients your plants need (the growing medium provides nothing but structure for the plants). To grow iceberg lettuce, start by filling a shallow seed tray with soil and sprinkling a few seeds in each cell a few weeks before the last frost. I have taught myself the basics of hydroponics and must have read every report and book on the subject. This method allows you to grow an abundance of small, lightweight crops such as lettuce, spinach, endives, or herbs such as basil, parsley, and cilantro. If you are interested in putting together your own hydroponic garden at home and want to start with a simple, foolproof method, a “lettuce raft” (also known as "deep water culture") system might be perfect for you. pH. Problem: Your lettuce tastes terrible. If you get these basics down, you can have home-grown lettuce all through the year! Put the cubes in a dish of water for two weeks in a dark condition. Maggie Moran is a Professional Gardener in Pennsylvania. However, the growing conditions can affect the growth rate.”. Thanks for reading. Not to forget that it is extremely easy, productive and fun way to cultivate a crop in your household. What I do is, I create a small depression on the potting media surface and press the lettuce seed in. Cover very lightly with a fine starter soil. 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