Category Archives: Lettuce

Gaviota – Favorite Kratky Hydroponic Lettuce

Mature Gaviota Lettuce grown in Kratky Method Hydroponics
Mature Gaviota Lettuce grown in Kratky Method Hydroponics
I’ve tried quite a few different lettuces using the Kratky Method, growing them in individual containers, and Gaviota is by far my favorite. Not only does it grow well in the nutrient solution, but it grows fast. The leaves are perfect for salads. If you just rip the end off of it, it breaks down into perfect bite-size pieces. If you were to cut the entire head off at a certain point, all the leaves come apart. No chopping, no fuss, just a single cut. Starting at 3-4 weeks it’s great for cut & come again harvesting. I like to harvest 1/4-1/3 of a plant and put it in water in a bowl in the fridge and overnight it becomes even more crisp.

Lettuce flowers, pod development & seed collection

Lettuce flowers in bloom
Lettuce flowers in bloom
Lettuce seed ready to collect
Lettuce seed ready to collect
Collected lettuce seed
Collected lettuce seed

I’m not one to harvest lettuce seed for reuse, as I like to try out new varieties but I have been curious about how the flowers look, and how the seeds develop so I let some go to seed.

It took weeks before I caught some flowers actually open. Most of the day the flowers are tightly closed. Since I never saw any flowers open I was beginning to think that they never really opened.

Conveniently I had one plant with open blooms and another with fully formed seed heads at the same time for the photographs.

The seed head I pulled the seeds from contained 18 seeds. One plant going to seed would be more than enough to supply for any garden the next year.

Outdoor Lettuce in Containers & Sweet Alyssum for Aphid Control

I have grown hydroponic lettuce successfully and really enjoyed it, but that was all indoors, and while I found the lettuce acceptable, it was a not as crisp as I would like from not having the normal stresses of outdoor life to toughen the leaves up. I had a fan blowing over them once an hour, but that can only do so much.

I started a couple Reine des Glaces and Green Towers from seed outside in January and they did great, but got infested with countless hordes of aphids. I washed them off quite a bit, but you can only do so much at that point.

I wanted to find out how large organic operations managed to grow lettuce and control for aphids without sprays and after quite a bit of research I found this video.

I started my own Sweet Alyssum plants the next day. I have a standalone pot of it growing so I can move it around, and planted some below a couple tomatoes. According to the research that should be way more than necessary. I have one lettuce plant growing hydroponically outside at the moment and haven’t seen a single aphid on it in the last couple weeks. The plant definitely had a few aphids colonizing it when I started the Sweet Alyssum, so this is a good sign that it does work.

Sweet Alyssum at 50 days
Sweet Alyssum at 50 days

Now I have some lettuce starts nearly ready to transplant outside.

Freckles, Prizehead, Reine des Glaces and Green Towers Starts
Freckles, Prizehead, Reine des Glaces and Green Towers Starts

The other issue I had with growing lettuce outdoors is with cut worms taking the plants down. I’m going to try either planting then with collars made from the plastic shot glasses, or planting toothpicks next to the stems.

Sweet Alyssum at 77 days
Sweet Alyssum at 77 days