Lettuce Bolting - Aquaponic Gardening2024-03-29T13:56:16Zhttps://aquaponicgardening.ning.com/forum/topics/lettuce-bolting?commentId=4778851%3AComment%3A294123&feed=yes&xn_auth=noit's kind of funny actually,…tag:aquaponicgardening.ning.com,2012-02-16:4778851:Comment:2941232012-02-16T16:17:03.800ZAveranhttps://aquaponicgardening.ning.com/profile/AveranGale
<p>it's kind of funny actually, for all the systems built around mono-cropping lettuce it is the one plant that i can't seem to grow well! i've given up trying to eat the lettuce in my bed and try to convince myself it's just there to feed the bugs. it really does seem to be quite finicky about its growing conditions!</p>
<p>it's kind of funny actually, for all the systems built around mono-cropping lettuce it is the one plant that i can't seem to grow well! i've given up trying to eat the lettuce in my bed and try to convince myself it's just there to feed the bugs. it really does seem to be quite finicky about its growing conditions!</p> High nitrate levels certainly…tag:aquaponicgardening.ning.com,2012-02-16:4778851:Comment:2939252012-02-16T13:22:27.903ZTCLynxhttps://aquaponicgardening.ning.com/profile/TCLynx
<p>High nitrate levels certainly tend to keep many plants growing lots of leafy green but lettuce is generally a very low nutrient demand plant so I would say you need to have nearly 0 nitrate in order for the lack of nitrates to be the cause of bolting.</p>
<p>Granted, my experience is from a sub tropical climate but this winter I've had some very low to even no nitrate conditions in some of my systems and the lettuce is not bolting from it.</p>
<p>High nitrate levels certainly tend to keep many plants growing lots of leafy green but lettuce is generally a very low nutrient demand plant so I would say you need to have nearly 0 nitrate in order for the lack of nitrates to be the cause of bolting.</p>
<p>Granted, my experience is from a sub tropical climate but this winter I've had some very low to even no nitrate conditions in some of my systems and the lettuce is not bolting from it.</p> I know it sounds odd, but low…tag:aquaponicgardening.ning.com,2012-02-16:4778851:Comment:2941032012-02-16T07:38:48.866ZJon Parrhttps://aquaponicgardening.ning.com/profile/JonParr
I know it sounds odd, but low nitrate levels also lead to bolting, and high nitrate levels keep lettuce in veg stage. Learned this from a quote in the UVI manual. They regulate nitrate levels by letting the the solids settling/degassing tank build up some crud to lower nitrates (anaerobic bacteria convert nitrates to atmospheric N, hence the degassing tank), and keep it clean for high nitrate levels. Or so I've read.
I know it sounds odd, but low nitrate levels also lead to bolting, and high nitrate levels keep lettuce in veg stage. Learned this from a quote in the UVI manual. They regulate nitrate levels by letting the the solids settling/degassing tank build up some crud to lower nitrates (anaerobic bacteria convert nitrates to atmospheric N, hence the degassing tank), and keep it clean for high nitrate levels. Or so I've read. How warm does it get in the g…tag:aquaponicgardening.ning.com,2012-02-16:4778851:Comment:2937992012-02-16T05:44:29.344ZDarlene Skellionhttps://aquaponicgardening.ning.com/profile/DarleneSkellion
<p>How warm does it get in the greenhouse during the day? Try to keep it cool -- vents & fans will help a bit but if it's too warm then it will bolt regardless. We're at 6400' (western Colorado) and our lettuce has been amazing (our 1st winter growing in an unheated greenhouse) but the arugula has bolted.It's been as low as 16 (in the greenhouse) for a few nights but will heat up quickly during the day. I've grown lettuce outside here in the summer but have to keep it shaded with row…</p>
<p>How warm does it get in the greenhouse during the day? Try to keep it cool -- vents & fans will help a bit but if it's too warm then it will bolt regardless. We're at 6400' (western Colorado) and our lettuce has been amazing (our 1st winter growing in an unheated greenhouse) but the arugula has bolted.It's been as low as 16 (in the greenhouse) for a few nights but will heat up quickly during the day. I've grown lettuce outside here in the summer but have to keep it shaded with row covers as the sun is too intense for it. We have a Chop 2 system as well as a Friendly DWC system and the plants in the Chop 2 are amazing - but only the lettuce enjoyed the DWC system this winter - everything else just went into hibernation. Could be we started them too late to get any real growth going before the daylight got too short. </p>
<p>This was an experiment for the winter and it has been so amazing to go harvest greens in the middle of snowstorm!! Our neighbors are clamoring for our veggies!! Can't wait to see what the longer days will bring!<img src="http://www.bkserv.net/images/Grin.gif"/></p> heat and dryness is the main…tag:aquaponicgardening.ning.com,2012-02-16:4778851:Comment:2939132012-02-16T04:38:32.574ZDamon Poltahttps://aquaponicgardening.ning.com/profile/DamonPolta
<p>heat and dryness is the main issue... lack of exposure to light isn't an exclusive cause to bolting... even in the hawaiian summer the lettuce would bolt, and during that summer it's hot, dry, and sunny.</p>
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<p>bolting is a defense mechanism... it can be cause by just about anything that threatens the procreation of the lettuce... too hot, too cold, too dry, excessive sunlight, too little sunlight... really lettuce is a pampered princess... </p>
<p>heat and dryness is the main issue... lack of exposure to light isn't an exclusive cause to bolting... even in the hawaiian summer the lettuce would bolt, and during that summer it's hot, dry, and sunny.</p>
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<p>bolting is a defense mechanism... it can be cause by just about anything that threatens the procreation of the lettuce... too hot, too cold, too dry, excessive sunlight, too little sunlight... really lettuce is a pampered princess... </p> I have had the same issues...…tag:aquaponicgardening.ning.com,2012-02-16:4778851:Comment:2938422012-02-16T02:21:31.118ZJapan Aquaponics - アクアポニックス 日本https://aquaponicgardening.ning.com/profile/JapanAquaponics
<p>I have had the same issues... a look around the forums and gardening sources seemed to indicate that lettuce commonly (but not exclusively) bolts when there is insufficient light as TCL noted. More access to light may well work... but in the meantime, I reburied leggy lettuce even deeper and they seemed to respond ok and I had better results. Hope that helps.</p>
<p>I have had the same issues... a look around the forums and gardening sources seemed to indicate that lettuce commonly (but not exclusively) bolts when there is insufficient light as TCL noted. More access to light may well work... but in the meantime, I reburied leggy lettuce even deeper and they seemed to respond ok and I had better results. Hope that helps.</p> I've rarely ever gotten full…tag:aquaponicgardening.ning.com,2012-02-16:4778851:Comment:2937002012-02-16T02:05:10.406ZTCLynxhttps://aquaponicgardening.ning.com/profile/TCLynx
<p>I've rarely ever gotten full closed heads of lettuce but I live in FL and even this winter has been too hot to grow dense closed heads of lettuce since we have been only getting a few days at a time of cool weather. I generally give up growing lettuce for about 1/3rd to half of the year and I find I do best when I choose varieties that do well with warmer weather. Summer crisps and some butter crunch. Good light along with cool conditions seems to be rather important in my experience at…</p>
<p>I've rarely ever gotten full closed heads of lettuce but I live in FL and even this winter has been too hot to grow dense closed heads of lettuce since we have been only getting a few days at a time of cool weather. I generally give up growing lettuce for about 1/3rd to half of the year and I find I do best when I choose varieties that do well with warmer weather. Summer crisps and some butter crunch. Good light along with cool conditions seems to be rather important in my experience at getting dense colorful growth on the lettuce. When they get too much shade they tend to be leggy then bolt instead of heading up.</p>