{"id":9872,"date":"2020-03-06T08:33:22","date_gmt":"2020-03-06T16:33:22","guid":{"rendered":"http:\/\/gregalder.com\/yardposts\/?p=9872"},"modified":"2023-02-17T14:15:18","modified_gmt":"2023-02-17T22:15:18","slug":"when-to-plant-tomatoes-in-southern-california","status":"publish","type":"post","link":"https:\/\/gregalder.com\/yardposts\/when-to-plant-tomatoes-in-southern-california\/","title":{"rendered":"When to plant tomatoes in Southern California"},"content":{"rendered":"\n<p>My &#8220;reliable&#8221; <a href=\"https:\/\/gregalder.com\/yardposts\/product\/the-yard-posts-food-gardening-calendar-2023\/\">gardening calendar for Southern California<\/a> says to plant your first tomatoes after March 15. So why are these already in the ground in my garden, planted February 29?<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>How early can you plant your first tomatoes?<\/strong><\/p>\n\n\n\n<p>Do you realize how dry it has been the last couple months? Usually January and February are our wettest months of the year, but the<a href=\"https:\/\/www.youtube.com\/watch?v=NhvCDapQyYA\"> National Weather Service says<\/a> that throughout Southern California they were among&nbsp;the top ten driest for those months on record.&nbsp;(Luckily we got lots of rain in November and December.)<\/p>\n\n\n\n<p>Dry soil is warm soil. Soil that has warmed earlier than usual can be planted to tomatoes earlier than usual.<\/p>\n\n\n\n<p>After March 15 is a sure bet for when to plant tomatoes in most of Southern California, but &#8212; as my gardening calendar also notes &#8212; plants grow according to the environmental conditions, not the calendar.<\/p>\n\n\n\n<p>(Keep an eye on the weather if planting around mid-March, as it can still get colder than tomatoes like in some parts of Southern California. See my post, <a href=\"https:\/\/gregalder.com\/yardposts\/i-planted-tomatoes-too-early\/\">&#8220;I planted tomatoes too early.&#8221;<\/a>)<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Protecting early tomato plants<\/strong><\/p>\n\n\n\n<p>When I say sure bet, I\u2019m talking about when you can plant tomatoes that will immediately grow well, in the ground, out in the yard, on their own without protection. Farmer Roy plants his first tomatoes in January every year, but he also keeps them covered with frost blankets, which protect the plants on cold nights and also warm them during the day. Still, he loses some of those early plants to the cold each year, as he farms in Poway, an inland valley.<\/p>\n\n\n\n<p>(Who&#8217;s Farmer Roy? Read my post about him <a href=\"https:\/\/gregalder.com\/yardposts\/learning-from-the-california-gardener-of-the-year\/\">here<\/a>.)<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2019\/06\/picking-tomatoes-childrens-garden.jpg\" alt=\"\" class=\"wp-image-5607\" width=\"482\" height=\"453\" srcset=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2019\/06\/picking-tomatoes-childrens-garden-300x283.jpg 300w, https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2019\/06\/picking-tomatoes-childrens-garden-768x724.jpg 768w\" sizes=\"(max-width: 482px) 100vw, 482px\" \/><figcaption class=\"wp-element-caption\">Roy&#8217;s early planted cherry tomatoes ready for harvest in June of 2019.<\/figcaption><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Overwintering tomato plants<\/strong><\/p>\n\n\n\n<p>What about those old plants that last through the winter? Do you have any of those? Here in Southern California in many locations and in some winters, our tomato plants don\u2019t get killed by the cold so they just keep growing unless pests or diseases get the best of them.<\/p>\n\n\n\n<p>My previous yard near San Diego\u2019s Balboa Park never saw frost and my tomatoes were never killed by winter cold. In my current yard, which is farther inland and colder on winter nights, tomato plants usually get killed by cold at some point during winter, but not every year. This year, that point was December 19 (2019) for this tomato plant:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2020\/03\/tomato-plant-killed-by-cold-1024x692.jpg\" alt=\"\" class=\"wp-image-9880\" width=\"547\" height=\"369\"\/><\/figure>\n\n\n\n<p>But here is a tomato plant at a school garden in San Diego that was still thriving on January 23:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2020\/03\/winter-tomato-plant-San-Diego-732x1024.jpg\" alt=\"\" class=\"wp-image-9874\" width=\"324\" height=\"453\"\/><\/figure>\n\n\n\n<p>And a friend whose garden is on a warm, south-facing hillside kept this sprawling and healthy tomato plant going through this winter:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2020\/03\/winter-tomato-plant-Poway-1024x725.jpg\" alt=\"\" class=\"wp-image-9875\" width=\"526\" height=\"371\"\/><\/figure>\n\n\n\n<p>So for locations like these that rarely see frost, should tomatoes be planted any day of the year? And should those tomatoes be kept growing into a second or third year? Maybe.<\/p>\n\n\n\n<p>Even where there is no frost in Southern California, the winter is still chilly enough such that tomato plants grow slowly that time of year, and the fruit matures very slowly and doesn\u2019t taste as flavorful as in the warmer seasons. But if you don\u2019t mind that, then go for it.<\/p>\n\n\n\n<p>My friend in the photo above recently removed that tomato plant. He just didn\u2019t like that it was so big and taking up so much space.<\/p>\n\n\n\n<p>I usually remove most of my tomato plants during winter even if the weather doesn\u2019t kill them for me because I\u2019ve found that second-year tomato plants usually don\u2019t produce as well as new, first-year plants.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>How late can you plant your last tomatoes?<\/strong><\/p>\n\n\n\n<p>Now on the other end of the season, should we keep planting tomatoes into the summer? Farmer Roy plants new tomatoes roughly every month starting in January and ending in late June or early July. My own rule of thumb is to get my last tomatoes in by the Fourth of July.<\/p>\n\n\n\n<p>And I usually plant two rounds: one early and one late.<\/p>\n\n\n\n<p>This late planting of tomatoes will provide fruit in the fall. Often, some of the tomato plants put in early burn out in the heat of mid-summer (they\u2019re already almost six months old).<\/p>\n\n\n\n<p>But the late plants are young and vigorous through the heat of July and August, and they usually start fruiting in early fall. It is often from these late plants that you\u2019ll <a href=\"https:\/\/gregalder.com\/yardposts\/harvesting-tomatoes-and-broccoli-at-the-same-time\/\">harvest tomatoes at the same time you\u2019re harvesting your first heads of broccoli<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2020\/03\/Celebrity-tomatoes-harvested-November-19-1024x748.jpg\" alt=\"\" class=\"wp-image-9876\" width=\"530\" height=\"386\"\/><figcaption class=\"wp-element-caption\">&#8216;Celebrity&#8217; tomatoes harvested beside young brassica plants. November 19, 2016.<\/figcaption><\/figure>\n\n\n\n<p>Why not plant tomatoes later than the Fourth of July? In most years, the weather will cool too much and the day length becomes too short in the late fall such that if you plant in late summer you\u2019ll get few tomatoes out of the plant. In other words, go ahead and plant tomatoes after the Fourth of July but don\u2019t count on getting a big harvest.<\/p>\n\n\n\n<p>Or a harvest with maximum flavor. I\u2019ve always found that tomatoes that mature after about Thanksgiving don\u2019t have as much flavor as those that mature in summer and early fall. The possible exception is cherry tomatoes, which don\u2019t seem to need as much heat to taste sweet. We were still eating tasty tomatoes from a <a href=\"https:\/\/territorialseed.com\/products\/tomato-sungold\">Sungold<\/a> plant after Christmas this winter.<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Which types to plant when<\/strong><\/p>\n\n\n\n<p>The smaller the tomato, the less heat and sunlight and time are required for maturity.<\/p>\n\n\n\n<p>For this reason, I always try to plant at least one cherry tomato with my early round and my late round. With the early planting, a cherry will give you tomatoes to eat earlier than big types. With the late planting, a cherry will give you tomatoes to eat farther into winter.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gregalder.com\/yardposts\/wp-content\/uploads\/2020\/03\/cherry-tomatoes-harvested-late-July-736x1024.jpg\" alt=\"\" class=\"wp-image-9883\" width=\"331\" height=\"460\"\/><figcaption class=\"wp-element-caption\">Cherry and other small tomatoes harvested in July of 2019.<\/figcaption><\/figure>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Take-aways<\/strong>:<\/p>\n\n\n\n<p>-Generally safe to plant tomatoes in Southern California between March 15 and Fourth of July<\/p>\n\n\n\n<p>-If sowing seeds, start 1-2 months earlier than planting dates (that means as early as January, but start those indoors or in a greenhouse, not in the garden ground)<\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>My other tomato posts:<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/gregalder.com\/yardposts\/succeeding-at-tomatoes\/\">&#8220;Succeeding at tomatoes&#8221;<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/gregalder.com\/yardposts\/failing-at-tomatoes\/\">&#8220;Failing at tomatoes&#8221;<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/gregalder.com\/yardposts\/i-planted-tomatoes-too-early\/\">&#8220;I planted tomatoes too early&#8221;<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/gregalder.com\/yardposts\/san-diego-tomatoes-and-supporting-tomatoes\/\">\u201c\u2018San Diego\u2019 tomatoes and supporting tomatoes\u201d<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/gregalder.com\/yardposts\/the-best-way-to-support-tomato-plants\/\">&#8220;The best way to support tomato plants&#8221;<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/gregalder.com\/yardposts\/tomato-varieties-for-southern-california-2019\/\">\u201cTomato varieties for Southern California, 2019.\u201d<\/a><\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>A list of all Yard Posts is <a href=\"https:\/\/gregalder.com\/yardposts\/list-of-yard-posts\/\">here<\/a><\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>My &#8220;reliable&#8221; gardening calendar for Southern California says to plant your first tomatoes after March 15. So why are these already in the ground in my garden, planted February 29? How early can you plant your first tomatoes? Do you realize how dry it has been the last couple months? Usually January and February are [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":9886,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[30],"tags":[45],"class_list":["post-9872","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vegetables","tag-tomatoes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>When to plant tomatoes in Southern California - Greg Alder&#039;s Yard Posts: Southern California food gardening<\/title>\n<meta name=\"description\" content=\"How early can you plant tomatoes, and how late can you plant tomatoes in Southern California -- for thriving production, not just surviving plants?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gregalder.com\/yardposts\/when-to-plant-tomatoes-in-southern-california\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"When to plant tomatoes in Southern California - 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