{"id":3725,"date":"2026-09-26T13:53:05","date_gmt":"2026-09-26T13:53:05","guid":{"rendered":"https:\/\/www.tomat-pomidor.com\/en\/?p=3725"},"modified":"2026-09-26T13:53:34","modified_gmt":"2026-09-26T13:53:34","slug":"giant-of-siebenburgen","status":"publish","type":"post","link":"https:\/\/www.tomat-pomidor.com\/en\/giant-of-siebenburgen\/","title":{"rendered":"Giant of Siebenburgen Tomato: Reviews &#038; Yield Tips"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;3725&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Share your rating&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Giant of Siebenburgen Tomato: Reviews \\u0026amp; Yield Tips&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">Share your rating<\/span>\n    <\/div>\n    <\/div>\n<div class=\"tldr-box\" style=\"background: #f4f9f4; padding: 20px; border-left: 5px solid #4CAF50; margin-bottom: 30px; border-radius: 4px;\">\n<h3>\ud83d\udccc Quick Summary (TL;DR): Giant of Siebenburgen<\/h3>\n<ul>\n<li>\ud83c\udf0d <strong>Origin:<\/strong> A historic European heirloom originating from the Siebenb\u00fcrgen region (modern-day Transylvania, Romania). In Russia, it circulates as <em>Gigant Zibenburgena<\/em>.<\/li>\n<li>\ud83c\udf3f <strong>Plant Habit:<\/strong> Indeterminate (tall), reaching over 6.5 ft (2 m) inside a greenhouse.<\/li>\n<li>\ud83c\udf45 <strong>Fruit Characteristics:<\/strong> Large, red, classic oxheart-shaped tomatoes. They are very meaty and dense.<\/li>\n<li>\ud83d\udc45 <strong>Flavor:<\/strong> The taste profile varies depending on how it is grown-some report a tart, acidic kick, while others get perfectly sweet fruits.<\/li>\n<li>\ud83d\udcc8 <strong>Growing Traits:<\/strong> A mid-late season ripener. Yield can sometimes be spotty in its first year, but growers report massive improvements when saving seeds and planting seedlings deeply (trench planting) to build a massive root system.<br \/>\nPhoto by <a href=\"https:\/\/www.tomat-pomidor.com\/gallery\/image\/143847-%D0%93%D0%B8%D0%B3%D0%B0%D0%BD%D1%82%20%D0%97%D0%B8%D0%B1%D0%B5%D0%BD%D0%B1%D1%83%D1%80%D0%B3%D0%B5%D0%BD%D0%B0\/\" target=\"_blank\" rel=\"noopener\">Alena<\/a><\/li>\n<\/ul>\n<\/div>\n<div class=\"add-review-cta\" style=\"margin: 20px 0; padding: 15px; background: #f9f9f9; border-left: 4px solid #4CAF50; border-radius: 4px;\"><strong>\ud83c\udf45 Grown this variety?<\/strong> <a href=\"#wpdcom\">Click here to add your own photos and review below!<\/a><\/div>\n<div class=\"forum-post\">\n<div class=\"author-header\">\n<div class=\"forum-avatar\">I<\/div>\n<div class=\"author-meta\">\n<div class=\"author-name\">ilja (Ilya) <span class=\"author-stats\">\u2b50 Pro Grower (758 posts)<\/span><\/div>\n<div class=\"author-geo\">\ud83d\udccd Klinsky District, Moscow Region (USDA Zone 4)<\/div>\n<\/div>\n<\/div>\n<div class=\"post-content\">\n<p>Giant of Siebenburgen &#8211; a tall (in the greenhouse it reaches 6.5 ft \/ 2 m or more) tomato variety, mid-late season ripening time. The fruits are large, heart-shaped, and red. Meaty, with a nice tart\/acidic kick to the taste.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.tomat-pomidor.com\/uploads\/newforum\/attachments01\/67224_a90c45659ce97b8e41d5bbc8bf2456861f6d9d1f.jpg\" alt=\"Giant of Siebenburgen red oxheart tomato on vine\" width=\"499\" height=\"499\" \/><br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.tomat-pomidor.com\/uploads\/newforum\/attachments01\/67226_79e8cc863c97c75823fcfabf48c12a1b87d4f1f2.jpg\" alt=\"Giant of Siebenburgen massive heart on a scale\" width=\"499\" height=\"499\" \/><br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.tomat-pomidor.com\/uploads\/newforum\/attachments01\/67228_c4364905010da50530966419c69cc7d701c175fa.jpg\" alt=\"Meaty cross section of red oxheart tomato\" width=\"499\" height=\"499\" \/><\/p>\n<\/div>\n<\/div>\n<div class=\"forum-post\">\n<div class=\"author-header\">\n<div class=\"forum-avatar\">L<\/div>\n<div class=\"author-meta\">\n<div class=\"author-name\">Lana_s_Kavkaza (Svetlana) <span class=\"author-stats\">\u2b50 Pro Grower (19,268 posts)<\/span><\/div>\n<div class=\"author-geo\">\ud83d\udccd Pyatigorsk (USDA Zone 6)<\/div>\n<\/div>\n<\/div>\n<div class=\"post-content\">\n<p>I liked the variety, tasty and sweet, but the yield was severely lacking. I will repeat it next year and feed it much better.<\/p>\n<\/div>\n<\/div>\n<div class=\"forum-post\">\n<div class=\"author-header\">\n<div class=\"forum-avatar\">L<\/div>\n<div class=\"author-meta\">\n<div class=\"author-name\">Lana_s_Kavkaza (Svetlana) <span class=\"author-stats\">\u2b50 Pro Grower (19,268 posts)<\/span><\/div>\n<div class=\"author-geo\">\ud83d\udccd Pyatigorsk (USDA Zone 6)<\/div>\n<\/div>\n<\/div>\n<div class=\"post-content\">\n<p>I repeated it, and growing it from my own saved seeds gave an excellent result. I planted the seedlings horizontally (trench planting) so they would develop a much larger root system. And here is the result: the variety rewarded me with large, tasty fruits. Maybe varieties like this <em>need<\/em> to be trench planted? At least here in the south.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.svetlanaf-ecosemena.ru\/image\/cache\/catalog\/tomat\/1221-5-500x500.JPG\" alt=\"Beautiful red oxheart Giant of Siebenburgen\" width=\"500\" height=\"500\" \/><br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.svetlanaf-ecosemena.ru\/image\/cache\/catalog\/tomat\/1221-2019-1-500x500.JPG\" alt=\"Harvest of Giant of Siebenburgen tomatoes\" width=\"500\" height=\"500\" \/><br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.svetlanaf-ecosemena.ru\/image\/cache\/catalog\/tomat\/1221-2019-2-500x500.JPG\" alt=\"Sliced Giant of Siebenburgen showing dense flesh\" width=\"500\" height=\"500\" \/><\/p>\n<\/div>\n<\/div>\n<div class=\"forum-post\">\n<div class=\"author-header\">\n<div class=\"forum-avatar\">I<\/div>\n<div class=\"author-meta\">\n<div class=\"author-name\">Inn@ (Inna) <span class=\"author-stats\">\u2b50 Pro Grower (6,399 posts)<\/span><\/div>\n<div class=\"author-geo\">\ud83d\udccd Sverdlovsk Region, Arti (USDA Zone 3)<\/div>\n<\/div>\n<\/div>\n<div class=\"post-content\">\n<blockquote><p><strong>On 10\/8\/2019 at 11:24 AM, Lana_s_Kavkaza said:<\/strong><br \/>\nI repeated it, and growing it from my own saved seeds gave an excellent result.<\/p><\/blockquote>\n<p>Svetlana, did the yield actually improve? I have seeds from Kulik sitting in my stash, but I can&#8217;t quite bring myself to test them out yet.<\/p>\n<\/div>\n<\/div>\n<div class=\"forum-post\">\n<div class=\"author-header\">\n<div class=\"forum-avatar\">L<\/div>\n<div class=\"author-meta\">\n<div class=\"author-name\">Lana_s_Kavkaza (Svetlana) <span class=\"author-stats\">\u2b50 Pro Grower (19,268 posts)<\/span><\/div>\n<div class=\"author-geo\">\ud83d\udccd Pyatigorsk (USDA Zone 6)<\/div>\n<\/div>\n<\/div>\n<div class=\"post-content\">\n<blockquote><p><strong>On 10\/8\/2019 at 2:11 PM, Inn@ said:<\/strong><br \/>\nSvetlana, did the yield actually improve?<\/p><\/blockquote>\n<p>Yes, the fruits turned out heavier by weight, and way more trusses set fruit. Though I have to admit, I did spray the very first trusses with &#8220;Zavyaz&#8221; (Blossom Set spray).<\/p>\n<\/div>\n<\/div>\n<div class=\"editor-note\" style=\"background: #eef7ff; padding: 15px; border-left: 4px solid #2196F3; margin-top: 25px; font-size: 1.1em; border-radius: 4px;\"><strong>\ud83d\udc68\u200d\ud83c\udf3e Editor&#8217;s Glossary: Trenching and Blossom Set<\/strong><br \/>\nSvetlana mentions two fantastic growing techniques to boost the yield of this variety:<\/p>\n<ul>\n<li><strong>Planting Horizontally (Trench Planting):<\/strong> If you have leggy seedlings, don&#8217;t dig a deep hole. Instead, dig a shallow horizontal trench, lay the stem down in it, and gently bend the top few leaves upward. Tomatoes have adventitious roots &#8211; meaning the entire buried stem will sprout a massive, vigorous root system to feed the plant!<\/li>\n<li><strong>&#8220;Zavyaz&#8221; (Blossom Set Spray):<\/strong> She mentions spraying the early blossoms with a product called <em>Zavyaz<\/em>. In Russia, this is a popular agricultural spray based on gibberellic acid (a natural plant hormone). In the US, the direct equivalent is products like <em>Bonide Tomato Blossom Set Spray<\/em>, which helps flowers set fruit even when the weather is too cold or too hot for natural pollination.<\/li>\n<\/ul>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udccc Quick Summary (TL;DR): Giant of Siebenburgen \ud83c\udf0d Origin: A historic European heirloom originating from the Siebenb\u00fcrgen region (modern-day Transylvania, Romania). In Russia, it circulates as Gigant Zibenburgena. \ud83c\udf3f Plant Habit: Indeterminate (tall), reaching over 6.5 ft (2 m) inside a greenhouse. \ud83c\udf45 Fruit Characteristics: Large, red, classic oxheart-shaped tomatoes. They are very meaty and &#8230; <a title=\"Giant of Siebenburgen Tomato: Reviews &#038; Yield Tips\" class=\"read-more\" href=\"https:\/\/www.tomat-pomidor.com\/en\/giant-of-siebenburgen\/\" aria-label=\"Read more about Giant of Siebenburgen Tomato: Reviews &#038; Yield Tips\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":3725,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[94,1,438],"tags":[72,33,43,82,377,924],"class_list":["post-3725","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-heirloom-other","category-beefsteak-large-slicers","category-red-tomatoes","tag-greenhouse-tomato","tag-indeterminate","tag-late-season","tag-meaty-tomato","tag-red-oxheart","tag-transylvanian-heirloom"],"_links":{"self":[{"href":"https:\/\/www.tomat-pomidor.com\/en\/wp-json\/wp\/v2\/posts\/3725","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tomat-pomidor.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tomat-pomidor.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tomat-pomidor.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tomat-pomidor.com\/en\/wp-json\/wp\/v2\/comments?post=3725"}],"version-history":[{"count":2,"href":"https:\/\/www.tomat-pomidor.com\/en\/wp-json\/wp\/v2\/posts\/3725\/revisions"}],"predecessor-version":[{"id":3727,"href":"https:\/\/www.tomat-pomidor.com\/en\/wp-json\/wp\/v2\/posts\/3725\/revisions\/3727"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.tomat-pomidor.com\/en\/wp-json\/wp\/v2\/posts\/3725"}],"wp:attachment":[{"href":"https:\/\/www.tomat-pomidor.com\/en\/wp-json\/wp\/v2\/media?parent=3725"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tomat-pomidor.com\/en\/wp-json\/wp\/v2\/categories?post=3725"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tomat-pomidor.com\/en\/wp-json\/wp\/v2\/tags?post=3725"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}