{"product_id":"premium-quick-colonizing-5-grain-jar-32oz-1","title":"Premium Quick-Colonizing 5-grain Jar (32oz)","description":"\u003cstyle\u003e\n@keyframes fadeInSoft {\n  from { opacity: 0; transform: translateY(10px); }\n  to { opacity: 1; transform: translateY(0); }\n}\n.fade-in-media {\n  animation: fadeInSoft 1.2s ease-out forwards;\n  opacity: 0;\n}\n.spec-table,\n.usage-table {\n  width: 100%;\n  border-collapse: collapse;\n  margin: 18px 0 24px 0;\n  font-size: 15px;\n}\n.spec-table th,\n.spec-table td,\n.usage-table th,\n.usage-table td {\n  border: 1px solid #e5e5e5;\n  padding: 10px 12px;\n  text-align: left;\n  vertical-align: top;\n}\n.spec-table th,\n.usage-table th {\n  background: #f7f7f7;\n}\n.info-callout {\n  background: #f8fafc;\n  border: 1px solid #e5e7eb;\n  border-radius: 8px;\n  padding: 16px 18px;\n  margin: 20px 0;\n}\n\u003c\/style\u003e\n\n\u003cp\u003e\u003cstrong\u003ePremium Quick-Colonizing 5-Grain Spawn Jar (32oz Wide Mouth)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSterile Grain Spawn Jar for Fast Colonization, Easy Inoculation \u0026amp; Bulk Growing\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cdiv style=\"text-align: center; margin: 18px 0 28px 0;\" class=\"fade-in-media\"\u003e\n  \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/5grain_jar_timeline_1K_16_9_low.jpg?v=1773499008\" alt=\"5-grain spawn jar colonization timeline showing mushroom grain jar progress from inoculation to full colonization\" style=\"max-width: 100%; height: auto; border-radius: 10px; box-shadow: 0 12px 30px rgba(0,0,0,0.12);\"\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eGet faster, more reliable growth with the \u003cstrong\u003eMidwest Grow Kits Premium 5-Grain Spawn Jar\u003c\/strong\u003e. This \u003cstrong\u003e32oz wide mouth sterile grain jar\u003c\/strong\u003e is designed for growers who want easy inoculation, dependable colonization, and strong performance for \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/monotubs-accessories\"\u003emonotubs\u003c\/a\u003e, \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/substrate-bulk-growing\"\u003ebulk substrate\u003c\/a\u003e, and other mushroom cultivation projects.\u003c\/p\u003e\n\n\u003cp\u003eEach jar is filled with a carefully balanced \u003cstrong\u003e5-grain mushroom spawn blend\u003c\/strong\u003e made from rye berries, white milo, red milo, white millet, and red millet. This mix provides a range of grain sizes that creates more inoculation points, helping support rapid mycelium spread and more aggressive colonization compared to single-grain jars or larger bulk containers.\u003c\/p\u003e\n\n\u003cdiv class=\"info-callout\"\u003e\n  \u003cp style=\"margin: 0;\"\u003e\u003cstrong\u003eWhy growers like 5-grain jars:\u003c\/strong\u003e Grain spawn jars can be more reliable and faster colonizing for beginners because the smaller grain volume is easy to monitor, easy to shake, and often colonizes quickly with less guesswork.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy Choose Our 5-Grain Spawn Jar?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Colonization Potential\u003c\/strong\u003e – Multiple grain sizes create more inoculation points for strong, even growth.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner-Friendly\u003c\/strong\u003e – Grain jars are easy to monitor and often more reliable for first-time growers.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean \u0026amp; Easy Inoculation\u003c\/strong\u003e – Self-healing injection port makes spore syringe or liquid culture use simple.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReliable Gas Exchange\u003c\/strong\u003e – Each lid includes a 0.22 micron filter disk for healthy airflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSterile \u0026amp; Ready to Use\u003c\/strong\u003e – Professionally sterilized and prepared for immediate inoculation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGreat for Bulk Growing\u003c\/strong\u003e – Ideal for mixing with casing mix or bulk substrate in monotubs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eOne (1) 32oz Wide Mouth Glass Spawn Jar\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium 5-Grain Blend\u003c\/strong\u003e made with:\n    \u003cul\u003e\n      \u003cli\u003eRye berries\u003c\/li\u003e\n      \u003cli\u003eWhite milo\u003c\/li\u003e\n      \u003cli\u003eRed milo\u003c\/li\u003e\n      \u003cli\u003eWhite millet\u003c\/li\u003e\n      \u003cli\u003eRed millet\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGypsum \u0026amp; Calcium Phosphate\u003c\/strong\u003e for improved grain performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e0.22 Micron Filter Disk\u003c\/strong\u003e for gas exchange\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-Healing Injection Port\u003c\/strong\u003e for clean inoculation\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eSterilized at 15 PSI for 120 Minutes\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\n\u003ctable class=\"spec-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eComponent\u003c\/th\u003e\n      \u003cth\u003eDetails\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eJar Size\u003c\/td\u003e\n      \u003ctd\u003e32oz Wide Mouth Glass Jar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePack Size\u003c\/td\u003e\n      \u003ctd\u003eSingle Jar\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eGrain Blend\u003c\/td\u003e\n      \u003ctd\u003eRye berries, white milo, red milo, white millet, red millet\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eAdditives\u003c\/td\u003e\n      \u003ctd\u003eGypsum and calcium phosphate\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFilter Type\u003c\/td\u003e\n      \u003ctd\u003e0.22 micron filter disk\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInjection Port\u003c\/td\u003e\n      \u003ctd\u003eSelf-healing port for spores or liquid culture\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSterilization\u003c\/td\u003e\n      \u003ctd\u003e15 PSI for 120 minutes\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRecommended Inoculation\u003c\/td\u003e\n      \u003ctd\u003e3–4cc per jar\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eRecommended Usage Chart\u003c\/h2\u003e\n\u003cp\u003eUse this quick chart as a general guide when planning your grow.\u003c\/p\u003e\n\u003ctable class=\"usage-table\"\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eApplication\u003c\/th\u003e\n      \u003cth\u003eRecommended Amount\u003c\/th\u003e\n      \u003cth\u003eNotes\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSpore Syringe per Jar\u003c\/td\u003e\n      \u003ctd\u003e3–4cc\u003c\/td\u003e\n      \u003ctd\u003eInject through the self-healing port for clean inoculation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLiquid Culture per Jar\u003c\/td\u003e\n      \u003ctd\u003e5–7cc\u003c\/td\u003e\n      \u003ctd\u003eIdeal for faster colonization when using clean culture\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBulk Substrate Ratio\u003c\/td\u003e\n      \u003ctd\u003e1–2 jars per 5 lbs of casing mix\u003c\/td\u003e\n      \u003ctd\u003eUse based on desired spawn-to-substrate ratio and colonization speed\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTypical Monotub Use\u003c\/td\u003e\n      \u003ctd\u003e2–3 jars per monotub\u003c\/td\u003e\n      \u003ctd\u003eVaries by tub size and substrate depth\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBest Use Case\u003c\/td\u003e\n      \u003ctd\u003eMonotubs, trays, bulk grows\u003c\/td\u003e\n      \u003ctd\u003eExcellent for expanding colonized grain into larger fruiting setups\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eDesigned for Faster Colonization\u003c\/h2\u003e\n\u003cp\u003eUnlike single-grain jars, this premium blend combines both larger and smaller grains to help distribute inoculant more effectively and support faster colonization throughout the jar. The result is a vigorous \u003cstrong\u003egrain spawn jar\u003c\/strong\u003e that is easy to shake, easy to expand, and ideal for growers who want dependable performance.\u003c\/p\u003e\n\n\u003cp\u003eThese \u003cstrong\u003emushroom grain jars\u003c\/strong\u003e are especially well-suited for growers moving into \u003cstrong\u003ebulk substrate cultivation\u003c\/strong\u003e and \u003cstrong\u003emonotub growing\u003c\/strong\u003e, where strong grain spawn can make a major difference in colonization speed and overall success. If you prefer larger-scale inoculation, you can also explore our \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/spawn-bags\"\u003espawn bags collection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eFrom Jar to Bulk Monotub Grow\u003c\/h2\u003e\n\u003cp\u003eThe video below shows the process of inoculating a grain jar, allowing it to colonize, breaking it up, and mixing it with substrate for a bulk monotub grow.\u003c\/p\u003e\n\n\u003cdiv style=\"max-width: 760px; margin: 25px auto 10px auto;\" class=\"fade-in-media\"\u003e\n  \u003cdiv style=\"position: relative; overflow: hidden; border-radius: 10px; box-shadow: 0 12px 30px rgba(0,0,0,0.12);\"\u003e\n    \u003cdiv style=\"padding: 56.25% 0 0 0; position: relative;\"\u003e\n      \u003ciframe src=\"https:\/\/player.vimeo.com\/video\/1173563699\" title=\"5-Grain Spawn Jar to Bulk Monotub Grow Video\" style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\"\u003e\u003c\/iframe\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003ePremium Grain Spawn Jar for Mushroom Cultivation\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eMidwest Grow Kits Premium 5-Grain Spawn Jar\u003c\/strong\u003e gives growers a sterile, ready-to-use grain spawn option built for fast colonization and strong expansion into bulk substrate. Whether you are inoculating with spores or liquid culture, this jar is designed to simplify the process and improve consistency from start to finish.\u003c\/p\u003e\n\n\u003cdiv style=\"margin: 30px 0; padding: 22px; border-radius: 14px; background: linear-gradient(135deg, #f8fbff, #eef6ff); border: 1px solid #dbeafe;\"\u003e\n  \u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; gap: 20px;\"\u003e\n    \u003cdiv style=\"flex: 1 1 260px;\"\u003e\n      \u003ch3 style=\"margin: 0 0 8px; font-size: 22px;\"\u003e\n        New to Grain Spawn?\n      \u003c\/h3\u003e\n\n      \u003cp style=\"margin: 0 0 14px; font-size: 15px; color: #374151;\"\u003e\n        Learn exactly how to inoculate, incubate, and fully colonize your spawn bags or grain jars with our step-by-step guide.\n      \u003c\/p\u003e\n\n      \u003ca href=\"https:\/\/www.midwestgrowkits.com\/pages\/spawn-bag-grain-jar-guide-how-to-inoculate-incubate-colonize\" style=\"display: inline-block; padding: 12px 18px; background: #1e90ff; color: white; border-radius: 8px; font-weight: 600; text-decoration: none;\"\u003e\n        Read the Full Guide →\n      \u003c\/a\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"flex: 1 1 180px;\"\u003e\n      \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/Spawn_bag_guide_hero_1.png?v=1776512883\" alt=\"Spawn Bag and Grain Jar Guide for 5-grain spawn jars\" style=\"width: 100%; border-radius: 10px;\"\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Midwest Grow Kits","offers":[{"title":"Default Title","offer_id":44595538559079,"sku":"PQC2","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3699\/8759\/files\/5grain_jar_single_30oz_5469dcc7-5898-48db-b0a6-ca4055b0e45a.jpg?v=1789057606","url":"https:\/\/fernprairiemycosupplies.com\/products\/premium-quick-colonizing-5-grain-jar-32oz-1","provider":"Fern Prairie Myco Supplies","version":"1.0","type":"link"}