Grow rock is another popular option that has a neutral pH and holds moisture well. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Sow a few lettuce seeds in each cell of a seed tray. 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). However, the growing conditions can affect the growth rate.”. Does that mean there is too much light? Diagnosis: Tip burn. Hydroponics is a science in which plants are grown in water that contains all the essential nutrients necessary for the plants to grow, flower and fruit. In that time, the seeds should sprout into little seedlings. Lettuce is the easiest vegetable to grow hydroponically, so it’s a great place to start. During the summer months, stick to the loose leaf varieties. If you go with rockwool, be careful to keep it from becoming too saturated. For tips from our Horticulturalist reviewer on setting up the water culture system and managing pests, scroll down! Bibb, the lettuce CropKing recommends many of its growers start with, takes between 14 and 21 days before transplant and then approximately 35-42 days to harvest in the winter. Lettuce is not a tropical vegetable! You’ve probably heard about the iceberg… If done in a correct manner it can result in growing the lettuce within a short period of time. Why do my lettuce wilt during the day and come back at night? And, lettuce is something that you can grow within weeks. Sow at least 5-10 seeds per seedling cube. (These varieties need at least 7 inches between plants). The upper temperature to grow heading lettuces (ie. Within 1 week, you should start to see roots shooting out through the bottom of, The root systems of lettuce are shallow and do not require very much space. Encourage a robust population of aphid enemies by growing plants with nectar-rich flowers, including cilantro, dill, and sweet alyssum. After some research, we chose this plant because it is the best plant that you could grow using the wick system. Thanks for reading. Hydroponics lettuce Why we chose Iceberg lettuce. So far, I’ve had to add nutrients twice in 6 days. Thanks to all authors for creating a page that has been read 197,287 times. It is no surprise to see people using hydroponics to grow lettuce. Metals can corrode or oxidize, releasing chemicals that can disrupt the supply of nutrients to your plant. What is the sweet spot for lettuce in terms of EC? Include your email address to get a message when this question is answered. 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. You’ll need to feed the plant daily as it grows. Leaf lettuce seedlings should be 4 inches (10.2 cm) apart while heads of lettuce should be 6 to 8 inches (15.2 to 20.3 cm) apart. We chose to grow iceberg lettuce hydroponically. What is the nutrition needed when growing hydroponic lettuce? All you need for your lettuce growing system is four polystyrene panels stacked on top of a shallow container filled with nutrient solution. unlocking this expert answer. Check the water level daily; your lettuce will not grow if the roots are not getting water. Contact Brian, Mr Stacky Australia admin@mrstacky.com.au 0424 169 729, Vertical Gardens –5 Tier Stackers –Wall Gardens –3 Tier Hangers –Heavy Duty Trolleys, Hydroponic Kits –5 Tier Manual Watering –Smart Farm Tower –Smart Farm 3 Tower –3 Tower DIY Kit –9 Tower DIY Kit, Commercial Farms –30 Tower Farm –60 Tower Farm –100 Tower Farm –Bulk Stacking Planters, * 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, * Will be ready for harvest from 30 – 60 days from sowing (depending on the variety). How to Harvest Hydroponic Lettuce With or Without the Roots. I have a habit of covering the tray or the flatwith the polythene sheet to keep the moisture intact and it has always paid off well. Diagnosis: Damping-off, a soilborne fungal disease that thrives in cool, damp, cloudy conditions and kills seedlings Solution: Space plants apart to provide good airflow and reduce watering. 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