{"product_id":"3-pack-premium-quick-colonizing-5-grain-jar-32oz","title":"3-Pack 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\u003e3-Pack Premium Quick-Colonizing 5-Grain Spawn Jars (32oz Wide Mouth)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSterile Grain Spawn Jars for Fast Colonization, Easy Inoculation \u0026amp; Bulk Growing\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003c!-- Top Colonization Timeline Image --\u003e\n\u003cdiv class=\"fade-in-media\" style=\"text-align: center; margin: 18px 0 28px 0;\"\u003e\n  \u003cimg style=\"max-width: 100%; height: auto; border-radius: 10px; box-shadow: 0 12px 30px rgba(0,0,0,0.12);\" alt=\"5-grain spawn jar colonization timeline showing mushroom grain jar progress from inoculation to full colonization\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0712\/0679\/7461\/files\/5grain_jar_timeline_1K_16_9_low.jpg?v=1773499008\"\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eGet faster, more reliable growth with \u003cstrong\u003eMidwest Grow Kits Premium 5-Grain Spawn Jars\u003c\/strong\u003e. This 3-pack of \u003cstrong\u003e32oz wide mouth sterile grain jars\u003c\/strong\u003e is designed for growers who want dependable colonization, easy inoculation, 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 Jars?\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\u003eThree (3) 32oz Wide Mouth Glass Spawn Jars\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 Jars\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePack Size\u003c\/td\u003e\n      \u003ctd\u003e3 Jars Per Pack\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 bulk 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\u003eRecommended for monotub and \u003ca href=\"https:\/\/www.midwestgrowkits.com\/collections\/substrate-bulk-growing\"\u003ebulk substrate\u003c\/a\u003e grows\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 class=\"fade-in-media\" style=\"max-width: 760px; margin: 25px auto 10px auto;\"\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 style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" title=\"5-Grain Spawn Jar to Bulk Monotub Grow Video\" src=\"https:\/\/player.vimeo.com\/video\/1173563699\"\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 Jars for Mushroom Cultivation\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eMidwest Grow Kits 3-Pack Premium 5-Grain Spawn Jars\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, these jars are 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      \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\" 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":44595538362471,"sku":"PQC9","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/3699\/8759\/files\/5grain_jar_new_32oz_white_background.jpg?v=1789057603","url":"https:\/\/fernprairiemycosupplies.com\/products\/3-pack-premium-quick-colonizing-5-grain-jar-32oz","provider":"Fern Prairie Myco Supplies","version":"1.0","type":"link"}