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7 votes
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Why are ants staying on my lettuce leaves?

Ants are in no way harmful to your vegetable plants. With at least one caveat. They love to raise and promote aphids. So cute, really. Lettuce is easy 'food' for aphids but rarely will you see ...
stormy's user avatar
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7 votes
Accepted

Should I cut the top off of this bolting lettuce?

Bolting in the fall is the normal time for lettuce to go to seed. To gather seed is a bigger more complicated task. If you didn't purchase viable seed or if that seed is GMO just will not work at ...
stormy's user avatar
  • 40.4k
6 votes

Should I cut the top off of this bolting lettuce?

Taste it. Usually when lettuce bolts it's time to pull the plant, as it turns horribly bitter. If you like bitter lettuce that may not be a problem for you. It commonly happens as the weather heats up ...
Ecnerwal's user avatar
  • 24.4k
5 votes

Why are ants staying on my lettuce leaves?

In addition to Stormy's answer, the other possibility is that the ants are looking for water. Lettuce and chard leaves often trap drops of water even in hot weather, and as a result are used as a ...
FuzzyChef's user avatar
  • 727
5 votes

Should I cut the top off of this bolting lettuce?

Unless you are interested in harvesting seeds, it makes sense to cut off the top. I had to do that for my lettuce as well. I also noted that the leaves from the lettuce started tasting bitter right ...
JStorage's user avatar
  • 7,964
5 votes

What's the best germination temperature for Grand Rapids lettuce?

It does sound quite hot for lettuce germination. For those of us in the US, that works out to 62F at night, 81F during the day. Grand Rapids is an heirloom variety from here where I live in the Great ...
michelle's user avatar
  • 9,484
4 votes
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Seed amount per plant spot

There is no right answer. It is up to you: How many pots, seed topsoil and space do you have How expensive are the seeds (some varieties are very expensive) How do you feel eradicating double ...
Giacomo Catenazzi's user avatar
4 votes

Will lettuce seeds germinate in summer?

Lettuce seeds show "high-temperature inhibition", or, plainly put, won't germinate at temperatures over 85 °F / 30 °C. Considering the fact that they are native to the Mediterranean, that's a ...
Stephie's user avatar
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4 votes
Accepted

How can I regulate lettuce indoors so it doesn't bolt/flower?

Control the lighting so it never exceeds 12 hrs. And keep it cool, below 70 degrees F if you can. Why you growing it indoors though, that's not usually done.
Escoce's user avatar
  • 6,426
4 votes

How can I tell which lettuce seeds are viable?

The classic viability test for is to place a counted number (10, 20, 50, 100) of seeds separate from each other onto a damp paper towel or blotting paper, supply them with optimal germination ...
Stephie's user avatar
  • 16.6k
3 votes

Can I reduce the amount of dirt that collects in corn salad / mâche?

The problem is you're eating them when they're at the rosette stage - they actually reach a foot high if left to grow on, and at that point, the problem of soil getting into the rosettes is much ...
Bamboo's user avatar
  • 134k
3 votes
Accepted

When to harvest lettuce seeds

The fluffy stuff (puffs of white cotton) is ready for harvest, they are attached to the plant very mildly when ready. If you take the fluffy stuff and it lets go/ detaches they are ready. In nature ...
benn's user avatar
  • 13.1k
3 votes

My hydroponic lettuce is mega bitter. Can I fix it?

The bitterness is caused by heat. Lettuce likes cool temps, where they don't often get over 75F, if you don't want them to get bitter. When the heat becomes more consistent, certain chemicals are ...
Bulrush's user avatar
  • 1,726
3 votes

Is a fungus causing my butter lettuce stems to rot right through?

I havent seen this exactly before, but it does look like that soil is very wet... not sure if it is some sort of moisture retaining soil, but if it is, I would mix it with some sort of normal garden ...
Grady Player's user avatar
  • 5,182
3 votes

How do you make the nutrient solution for a hydroponic system from solid compound NPK fertilizer?

Plants require 14 essential elements, and it sounds like you're only going to provide nitrogen, potassium, phosphorus, calcium, magnesium and sulphur. You also need to dissolve the constituents with ...
Graham Chiu's user avatar
  • 23.3k
3 votes

If you colour water red in a hydroponic system will the leaves on the lettuce turn red/pink

My daughter has to do a science project. ...I don't want to build the whole system just for it not to work. OK, time for you to better understand "science" - Which might be more properly ...
Ecnerwal's user avatar
  • 24.4k
2 votes

What would be eating my lettuce plants, and leaving some other vegetables alone?

There are many reasons why this may be happening. Rabbits, squirrels, mice/voles, cut worms, snails/slugs, etc. You will have to observe to see if there are foot marks in the soil or by going out at ...
JStorage's user avatar
  • 7,964
2 votes

Is a fungus causing my butter lettuce stems to rot right through?

Lettuces need steady growth in moist but not wet soil, in warm but not hot or cold conditions, and in full sun when you can keep the water right. For fungus to get started, there needs to be a wound ...
Colin Beckingham's user avatar
2 votes

Is a fungus causing my butter lettuce stems to rot right through?

That you can't see a problem except when you tried to harvest the lettuce suggests it's a very acute problem that hasn't affected its growth. I'd blame a fungus rotting the bottoms, and since you're ...
Graham Chiu's user avatar
  • 23.3k
2 votes

Why don't ants eat my lettuce?

Ants as a unified body of individuals are brilliant. Us humans could and should learn a thing or two from these insects. Ants eat a huge diversity of foods to include fats, cheese, breads, grease, ...
stormy's user avatar
  • 40.4k
2 votes

Can I use this fertilizer for my Hydroponics?

Sok, this looks like a very decent fertilizer for hydroponics. But not for lettuce as an example. Be great for tomatoes or squash or cucumbers or strawberries (depending on the pH of the water)......
stormy's user avatar
  • 40.4k
2 votes
Accepted

How do I prevent damping-off of my lettuce seedlings?

There are a number of herbs and spices such as cinnamon, carnation, garlic, thyme and more that have shown effectiveness in preventing damping-off disease. You can see the results of a study here. ...
OrganicLawnDIY's user avatar
2 votes

Will lettuce seeds germinate in summer?

You also have the option to germinate the seeds indoors assuming temperatures will be much cooler and conducive to lettuce seed germination. You can then transplant them outdoors. In my case I do ...
JStorage's user avatar
  • 7,964
2 votes

Which Pest Attacked My Lettuce Leaves?

This rather looks like hydroponic lettuce that has been attacked by birds. You don't say what area of the world, so no point in speculating about specific bird species, but maybe something which can ...
Colin Beckingham's user avatar
2 votes
Accepted

Lettuce Growth Stunted

Growing lettuce in warm/hot temperatures requires very careful choice of variety. Generally lettuce appreciates cool temperatures and unless specially adapted to heat will cause either slow ...
Colin Beckingham's user avatar
2 votes

Can I reduce the amount of dirt that collects in corn salad / mâche?

What are you mulching with? Cardboard is good, plain brown. It's not bleached and breaks down. Fishworms love it while slugs and snails hate it. The fishworm will add a lot of nitrogen to the soil, as ...
red's user avatar
  • 31
2 votes
Accepted

Slugs and snails eating lettuce?

Very well looks like that could be slug/snail damage. If you have a small amount of lettuce plants then just going outside at night with a flashlight and hand pulling off plants and the ground will ...
Tyler K.'s user avatar
  • 1,729
2 votes

What happen to my hydroponic lettuce leaves

That looks like tip burn, meaning that the foliage is absorbing too much light and heat and getting burned. One thing is that grow lights should be on a maximum of 14-18 hours particularly during that ...
nickcoxdotme's user avatar
1 vote

How can I have lettuce growing year-round?

Much as others have said, to grow lettuce year-round you'll probably have to use a temperature-controlled greenhouse, or else grow the lettuce indoors. Or do different things different times of the ...
Brōtsyorfuzthrāx's user avatar
1 vote

How can I have lettuce growing year-round?

Yes, you can do it. In fact on market in present days, we see lettuce all year around. How? It depends on where you live. @b.nota wrote about artificial light, but this is needed only if you live ...
Giacomo Catenazzi's user avatar

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