Growing Lettuce

lactuca sativa : Asteraceae / the daisy family

Jan F M A M J J A S O N Dec
P P P P P       P P P P

(Best months for growing Lettuce in New Zealand - cool/mountain regions)

  • P = Sow seed
  • Easy to grow. Sow in garden, or start in seed trays and plant out in 4-6 weeks.. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 46°F and 81°F. (Show °C/cm)
  • Space plants: 8 - 12 inches apart
  • Harvest in 8-12 weeks.
  • Compatible with (can grow beside): Carrots, Onions, Strawberries, Beets, Brassicas, Radish, Marigold, Borage, Chervil, Florence fennel, leeks.
  • Avoid growing close to: Parsley, Celery

Your comments and tips

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24 Mar 19, paul (Australia - sub-tropical climate)
When the root temperature of lettuce gets to 23 degrees the plant bolts - goes to seed. The plant does this as a survival mechanism. Something like, "Ouch, it's too hot! Quick, produce seeds before I die so my offspring will have a chance to grow in the future". That's lettuce. True also of coriander. Mulching the ground will help. Shadecloth will help. Taller/established plants nearby casting shadow is arguably best - see permaculture for design tips.
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07 Apr 09, Claudie (Australia - cool/mountain climate)
Hi again What's the best way to grow lettuce? Plant the actual seeds or grow the seeds in cotton wool until seedlings then transfer? :)
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01 Apr 09, David (Australia - temperate climate)
Bill: Lettuce going straight to seed usually happens when it's too hot or dry (cabbage & silver beet tend too as well). As you water daily I am guessing that the lettuce are getting too much sun, have you tried shading them from afternoon sun? I have some lettuce growing in the shade of my tomato forest (planted a little close together this year). The lettuce get maybe 2 hours direct sun first thing, then shaded for the rest of the day, and they are doing really well.
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29 Mar 09, Bill Gibbo (Australia - sub-tropical climate)
I have tried 3 or 4 different types of lettuce seedlings and also grown them from seed - all have the same problem going straight to seed without hearting, they are watered by bore sprinkler every day and in full sun. Any ideas?
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10 Mar 09, Barb (Australia - sub-tropical climate)
Georgie, Sounds like your lettuce maybe getting too much sun. I grow mine in filtered sun/semi shade in summer and they cope much better.
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07 Feb 09, (New Zealand - cool/mountain climate)
I'm having trouble with birds shredding young lettuce plants before they're big enough to eat.Thought it could be the hotter summer and birds are thirsty,but they seem to prefer my lettuces better than water bowl.Any suggestions?(apart from covering the plants) Thanks, Ann
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02 Aug 19, Selwyn (New Zealand - cool/mountain climate)
Try hanging old CD's up on string. I have heard that the birds don't like the flashing the CD's give off in the sun. Hope this helps.
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25 Nov 14, Matt Sheppard (New Zealand - sub-tropical climate)
Believe it or not, try a small scarecrow in the garden. We have two gardens, each with similar plantings. In one the lettuces have been shredded but the one with the scarecrow is perfect....
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07 Feb 09, georgie (Australia - sub-tropical climate)
virtually every seedling lettuce I put in wilted and died within a week or so. what sort of conditions do they like??mine were in sun with enriched soil
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05 Feb 09, sharon matthews (Australia - cool/mountain climate)
Gerri...ive heard that lettuce needs to be grown fast for it to be sweet. Lots of nitrogen rich organic liquid fertiliser.
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Showing 231 - 240 of 259 comments
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Hi Tara, the planting guide says you can plant lettuce in the garden now but how well it does may depend on where you are located and how hot your weather will be. I had a similar dilemma because I live in SW Qld and we have really hot long summers. I tried sowing some seeds in January but they didn't germinate and I read in a gardening book that they will not germinate in temps over 28 degrees. The same book also mentioned that it is possible to germinate lettuces in the fridge so that is what I have done :-D. I now have cute little lettuce seedlings almost ready to plant into the garden (2 loose leaf varieties) and after a couple of cooler days in the last week I have found some of my previous lettuces have self seeded and I have more plants coming up in the garden! I guess i will find out if they survive or not! The biggest danger in the hot temps is that the plants may go to seed quickly meaning less lettuce to eat. If planting lettuces this time of year it is important to give them plenty of shade and lots of water on the hot days. If the plants still go to seed quickly it may be just too hot for them and you can learn for next year. As far as which varieties to choose you should avoid heading lettuces like icebergs because I have heard you won't get a good head on them if it is too hot. I am not an expert - I have only been growing veg for about a year - but you should consider doing what I did and buy some mixed lettuce seedlings from your nearest garden shop and keeping the seeds from the varieties you like the best! Alternatively if any of your friends grow their own you can ask them for a taste or any spare seeds. If you already have some seeds you can always give them a try and see what works best!! If there are any more experienced gardeners out there feel free to correct me if I am wrong!

- Kt

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This planting guide is a general reference intended for home gardeners. We recommend that you take into account your local conditions in making planting decisions. GardenGrow is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. The information on this site is presented in good faith, but we take no responsibility as to the accuracy of the information provided.
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