{"id":1990,"date":"2026-11-05T07:00:00","date_gmt":"2026-11-05T06:00:00","guid":{"rendered":"http:\/\/192.168.60.121\/?p=1990"},"modified":"2026-11-09T01:20:02","modified_gmt":"2026-11-09T00:20:02","slug":"winter-lettuce-in-pots","status":"publish","type":"post","link":"https:\/\/ortoinbalcone.com\/en\/winter-lettuce-in-pots\/","title":{"rendered":"Winter Lettuce in Pots: Sowing and Harvest Until March"},"content":{"rendered":"<p>In February, in the middle of the freeze, there are people who harvest lettuce from the balcony. It is not a miracle: it is a question of <strong>the right variety, sowing in September\u2013October and a fleece over the coldest nights<\/strong>.<\/p>\n<p>Winter lettuce is the easiest crop of the cold garden: a 60\u201390 day cycle in mild Italian climates (cut-and-come-again types keep going, head types give one harvest), and young plants <strong>tolerate frost better than young summer plants<\/strong> (down to \u22122\/\u22123 \u00b0C with protection, and even more once formed).<\/p>\n<p>The full plant profile is in <a href=\"\/en\/piante\/oib-plant-016-lettuce\/\">Lettuce<\/a>. Here the focus is one: <strong>get you to March with fresh salad<\/strong>.<\/p>\n<h2>What &#8220;winter lettuce&#8221; to choose<\/h2>\n<p>It is not a species of its own: they are <strong>winter-cycle varieties<\/strong>, selected to germinate and grow even at 8\u201312 \u00b0C. The two families to look for on the packet:<\/p>\n<ul>\n<li><strong>Brune d&#8217;Hiver \/ winter lettuce<\/strong>: compact head, dark leaf, the hardiest in absolute terms. Germinates from 8 \u00b0C up and withstands \u22123 \u00b0C as a formed plant.<\/li>\n<li><strong>Early winter heading lettuce<\/strong>: small heads, a &#8220;leaf by leaf&#8221; harvest that lasts months.<\/li>\n<\/ul>\n<p>The right packet always says &#8220;winter&#8221; or the autumn sowing weeks. <a href=\"https:\/\/www.amazon.it\/dp\/B09C2CTCL4?tag=ortoinbalcone09-21\" rel=\"sponsored nofollow noopener\" target=\"_blank\">The 500-piece Brune d&#8217;Hiver seeds<\/a> are one of the few available on Amazon explicitly indicated for winter growing, cold-resistant and reproducible.<\/p>\n<h2>When to sow (and why not in November)<\/h2>\n<table>\n<thead>\n<tr>\n<th>Sowing<\/th>\n<th>Harvest<\/th>\n<th>Notes<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Late September<\/td>\n<td>December\u2013January<\/td>\n<td>The easiest: the plants are formed when the cold arrives<\/td>\n<\/tr>\n<tr>\n<td>October (first 2 weeks)<\/td>\n<td>January\u2013March<\/td>\n<td>Works while the days have light<\/td>\n<\/tr>\n<tr>\n<td>November<\/td>\n<td>\u2014<\/td>\n<td><strong>Climate-dependent<\/strong>: no in the North and the inland centre-north; possible but slow on southern and island coastlines, with fleece over it<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The practical rule: <strong>sow while the ground is still above 12 \u00b0C by day<\/strong>. In November that still holds only on southern and island coastlines; in the continental centre and the North, winter light no longer reliably starts germination.<\/p>\n<p>If you missed the train in October, the honest alternative: a nursery winter seedling in November, not the seed.<\/p>\n<h2>The pot and the substrate<\/h2>\n<ul>\n<li><strong>Volume<\/strong>: the tools record 6 L and 18 cm of depth as the minimum; here we recommend 10 L per plant: the extra volume buffers winter temperature and water. Alternatively, a 50\u00d720\u00d715 cm tray (about 12\u201314 litres) with 4\u20136 plants in two staggered rows at 12\u201315 cm: that is a leaf-harvest density, not full heads \u2014 for a single head keep 10 L per plant.<\/li>\n<li><strong>Substrate<\/strong>: the usual 60\/30\/10 mix (compost\/expanded clay\/perlite). In winter you no longer need rich &#8220;garden&#8221; compost: the cycle is slow and excess nitrogen in the cold produces soft leaves that rot.<\/li>\n<li><strong>Position<\/strong>: <strong>as much sun as possible<\/strong>. In December the sun is low: a south or south-west-facing balcony makes the difference between a harvest and nothing. The full guide is in <a href=\"\/en\/protection-from-weather\/\">Protection from weather<\/a>.<\/li>\n<\/ul>\n<h2>Sowing and thinning, step by step<\/h2>\n<ol>\n<li><strong>Prepare the tray or pot<\/strong> the day before: moist substrate, not sodden.<\/li>\n<li><strong>Seeds on the surface<\/strong>: 1\u20132 seeds every 10 cm, at 0.5 cm depth. Lettuce wants light to germinate: do not cover more than 5 mm.<\/li>\n<li><strong>First month<\/strong>: no transplanting, no potlets. Let it grow in place and <strong>thin to 15\u201320 cm<\/strong> when the plants have 3\u20134 true leaves. The thinnings are eaten, not thrown away.<\/li>\n<li><strong>Feeding<\/strong>: one dose of slow-release fertiliser at planting and that is enough for autumn. In winter you stand still (below 8\u201310 \u00b0C root uptake slows dramatically).<\/li>\n<\/ol>\n<p><figure><img decoding=\"async\" src=\"\/wp-content\/uploads\/2026\/10\/05-inline.webp\" alt=\"Hands harvesting lettuce leaves from a tray on the balcony\" loading=\"lazy\" \/><\/figure>\n<\/p>\n<h2>The protection that makes the difference<\/h2>\n<p>Here you win or lose the winter harvest:<\/p>\n<ul>\n<li><strong>Non-woven fleece (50 g\/m\u00b2)<\/strong> over a frame (sticks or a lattice): +3\u20135 \u00b0C on frosty nights, and it lets light and water through. The <a href=\"https:\/\/www.amazon.it\/dp\/B0HBLG1YBW?tag=ortoinbalcone09-21\" rel=\"sponsored nofollow noopener\" target=\"_blank\">Jarden anti-frost fleece 2 x 10 m<\/a> covers 4\u20135 trays.<\/li>\n<li><strong>When to use it<\/strong>: not all winter \u2014 only on nights below 0\u20132 \u00b0C. Nights too mild under the fleece favour downy mildew (humidity trapped for long stretches).<\/li>\n<li><strong>Mini greenhouse<\/strong>: same logic, more expensive, but you can leave it open by day without work.<\/li>\n<\/ul>\n<p>On a windless balcony the fleece is enough and then some. If your balcony is high up and windy, the mini greenhouse is worth the price.<\/p>\n<h2>Harvest: two strategies<\/h2>\n<ol>\n<li><strong>By head<\/strong>: the whole head forms indicatively 60\u201390 days from sowing in mild climates. Single but abundant.<\/li>\n<li><strong>By leaf (my winter favourite)<\/strong>: the outer leaves are harvested as needed, the plant keeps producing from the centre for 2\u20133 months. The cold <strong>hardens the sugars<\/strong>: winter lettuces are sweeter than August ones.<\/li>\n<\/ol>\n<p>Watering in winter is done <strong>at midday<\/strong>, never in the evening: the substrate must dry again before the frost. The full routine is in <a href=\"\/en\/watering-in-containers\/\">Watering in containers<\/a>.<\/p>\n<h2>Mistakes to avoid<\/h2>\n<ul>\n<li><strong>Sowing in November<\/strong> in an outdoor pot: outside the mildest maritime climates it rarely germinates reliably; if you are late, use a nursery seedling.<\/li>\n<li><strong>Leaving the fleece on all winter<\/strong>: closed humidity, high downy mildew risk.<\/li>\n<li><strong>Feeding in December<\/strong>: uptake is minimal, so excess salts sit in the pot and meet the roots again by March.<\/li>\n<li><strong>Using a summer variety<\/strong> (like &#8220;big heads for late summer&#8221;): at 8 \u00b0C it does not start, or starts slowly and stays dwarf.<\/li>\n<\/ul>\n<h2>Sources<\/h2>\n<ul>\n<li>CREA \u2014 Growing lettuce: varieties, sowing and harvest by season (technical sheets)<\/li>\n<li>Orto da Coltivare \u2014 Lettuce: sowing calendar and winter growing guide<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>In February, in the middle of the freeze, there are people who harvest lettuce from the balcony. It is not a miracle: it is a question of the right variety, sowing in September\u2013October and a fleece over the coldest nights. Winter lettuce is the easiest crop of the cold garden: a 60\u201390 day cycle in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1750,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_locale":"en_GB","_original_post":"https:\/\/ortoinbalcone.com\/?p=1853","oib_translation_group_id":"","oib_affiliate_link_limit":0,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-1990","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guide","en-GB"],"_links":{"self":[{"href":"https:\/\/ortoinbalcone.com\/wp-json\/wp\/v2\/posts\/1990","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ortoinbalcone.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ortoinbalcone.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ortoinbalcone.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ortoinbalcone.com\/wp-json\/wp\/v2\/comments?post=1990"}],"version-history":[{"count":3,"href":"https:\/\/ortoinbalcone.com\/wp-json\/wp\/v2\/posts\/1990\/revisions"}],"predecessor-version":[{"id":2588,"href":"https:\/\/ortoinbalcone.com\/wp-json\/wp\/v2\/posts\/1990\/revisions\/2588"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ortoinbalcone.com\/wp-json\/wp\/v2\/media\/1750"}],"wp:attachment":[{"href":"https:\/\/ortoinbalcone.com\/wp-json\/wp\/v2\/media?parent=1990"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ortoinbalcone.com\/wp-json\/wp\/v2\/categories?post=1990"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ortoinbalcone.com\/wp-json\/wp\/v2\/tags?post=1990"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}