{"product_id":"big-rainbow-heirloom-tomato-seeds","title":"Big Rainbow Heirloom Tomato Seeds","description":"\u003cp\u003e\u003cstrong\u003eBig Rainbow Heirloom Tomatoes\u003c\/strong\u003e are one of the most visually stunning heirlooms you'll grow — enormous beefsteak fruits that transition from golden yellow to deep red, both inside and out. Beloved by gardeners who want a tomato that's as impressive on the table as it is in the garden, Big Rainbow is open-pollinated, non-GMO, and entirely worth the wait.\u003c\/p\u003e\n\u003ch2\u003eHistory\u003c\/h2\u003e\n\u003cp\u003eBig Rainbow traces its roots to heirloom seed preservationists who prized it for its extraordinary size and extraordinary beauty — qualities that simply don't exist in commercial tomato breeding. This is the kind of tomato that gets passed down through families and traded at seed swaps because one look at a sliced fruit tells you everything. The bi-color flesh — golden yellow bleeding into ruby red — made it a favorite at farmers markets long before \"heirloom\" became a trend.\u003c\/p\u003e\n\u003ch2\u003ePlant Profile\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDays to Maturity:\u003c\/strong\u003e 80–90 Days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruit Size:\u003c\/strong\u003e 1–2 Pounds, occasionally larger\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlant Size:\u003c\/strong\u003e 5–7 Feet Tall\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlant Type:\u003c\/strong\u003e Indeterminate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFlavor Profile\u003c\/h2\u003e\n\u003cp\u003eBig Rainbow delivers a sweet, low-acid flavor with rich, fruity undertones and a dense, meaty texture. The golden-to-red flesh is juicy without being watery — exceptional for fresh eating, thick slices, and any dish where the tomato is the star.\u003c\/p\u003e\n\u003ch2\u003eWhen to Plant\u003c\/h2\u003e\n\u003cp\u003eStart seeds indoors 6–8 weeks before your last expected frost date. Transplant outdoors after all frost danger has passed and soil has warmed to at least 60°F. Use the \u003ca href=\"https:\/\/planthardiness.ars.usda.gov\"\u003eUSDA Plant Hardiness Zone Map\u003c\/a\u003e to find your zone.\u003c\/p\u003e\n\u003ch2\u003eGrowing Tips \u0026amp; Planting Dimensions\u003c\/h2\u003e\n\u003cp\u003eSpace plants 24–36 inches apart in rows 3–4 feet apart in full sun. Sow seeds 1\/4 inch deep at 70–80°F for germination in 7–14 days. Sturdy caging or staking is essential — these plants produce heavy fruit on vigorous vines. Water at the soil level (never overhead), rotate crops annually, and mulch around the base to retain moisture and suppress weeds. Good airflow between plants helps reduce disease pressure.\u003c\/p\u003e\n\u003ch2\u003e🌱 Gentle Cover Germination 🌱\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eInto the surface — thin cover only, no light needed\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eBig Rainbow tomato seeds are small — but don't let their size fool you. These little seeds carry everything needed to grow into vigorous, productive plants. They just ask for a little extra care at germination. Follow these steps and you'll be well on your way.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow to Germinate Successfully:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eStart with the right foundation. Use a fine seed-starting mix — not garden soil or coarse potting mix. Sift it if needed. Small seeds need a smooth, even surface to make good contact and germinate reliably.\u003c\/li\u003e\n\u003cli\u003eCover lightly — just barely. Press seeds onto the moist surface and cover with no more than 1\/8 inch of finely sifted mix. These seeds don't need light to germinate but they don't want to be buried either.\u003c\/li\u003e\n\u003cli\u003eMist, don't drench. Use a spray bottle to keep the surface evenly moist. Watering from above can wash small seeds away before they ever get started.\u003c\/li\u003e\n\u003cli\u003eWarmth is your friend. These seeds germinate best at 65–70°F — basically normal room temperature. A heat mat can help if your space runs cool.\u003c\/li\u003e\n\u003cli\u003eTrap the humidity. Cover your tray with a humidity dome or a loose piece of plastic wrap. This keeps moisture and warmth stable while you wait.\u003c\/li\u003e\n\u003cli\u003eGive them time. Keep conditions consistent, resist the urge to overwater, and trust the process — they will sprout.\u003c\/li\u003e\n\u003cli\u003eThin with scissors, not fingers. Once seedlings appear, snip extras at the soil line rather than pulling. These roots are close together and pulling one can disturb its neighbors.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eGrowth Type \u0026amp; Harvest Yields\u003c\/h2\u003e\n\u003cp\u003eBig Rainbow is an indeterminate variety — plants continue growing and producing all season until frost. Expect generous yields of 1–2 pound fruits on heavy, sprawling vines. Sturdy stakes or cages are a must to keep fruit off the ground and vines manageable.\u003c\/p\u003e\n\u003ch2\u003eKnowing When to Harvest\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSkin transitions from green to golden yellow with red blushing — pick when fully colored and slightly soft to the touch\u003c\/li\u003e\n\u003cli\u003eFor green-shouldered fruit, look for the red blush at the base to appear and spread\u003c\/li\u003e\n\u003cli\u003eHarvest regularly to encourage continued production throughout the season\u003c\/li\u003e\n\u003cli\u003eStore at room temperature for best flavor — refrigeration dulls the taste\u003c\/li\u003e\n\u003cli\u003eHandle gently — the skin is thinner than commercial varieties\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompanion Plants \u0026amp; Mutual Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBasil\u003c\/strong\u003e — classic culinary pairing, may deter certain pests, improves garden biodiversity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarigolds\u003c\/strong\u003e — deter nematodes and harmful insects, attract beneficial pollinators\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBorage\u003c\/strong\u003e — repels tomato hornworm, attracts bees, edible flowers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarrots\u003c\/strong\u003e — loosen soil beneath tomato roots, grow well alongside in raised beds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGarlic\u003c\/strong\u003e — strong scent discourages pests, maximizes garden space\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow to Enjoy\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThick slices on a summer sandwich or burger — the color alone stops people\u003c\/li\u003e\n\u003cli\u003eCaprese salad with fresh mozzarella and basil\u003c\/li\u003e\n\u003cli\u003eTomato tart or galette showcasing the bi-color flesh\u003c\/li\u003e\n\u003cli\u003eFresh salsa with herbs from the garden\u003c\/li\u003e\n\u003cli\u003eStuffed tomatoes — the size makes them ideal\u003c\/li\u003e\n\u003cli\u003eRaw fresh eating, straight off the vine\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eOrder Today\u003c\/h2\u003e\n\u003cp\u003eAdd Big Rainbow Heirloom Tomato Seeds to your garden and grow one of the most talked-about tomatoes in the heirloom world. Order today and experience why this variety has been treasured by seed savers for generations.\u003c\/p\u003e","brand":"Garden Heirloom Seeds","offers":[{"title":"Starter Pack of 10 seeds","offer_id":54026812358970,"sku":null,"price":0.99,"currency_code":"USD","in_stock":true},{"title":"Garden Pack of 25 seeds 🌱 Best Value","offer_id":54026812391738,"sku":null,"price":2.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/7850\/9626\/files\/big-rainbow-harvest-realistic.png?v=1788816341","url":"https:\/\/gardenheirloomseeds.com\/products\/big-rainbow-heirloom-tomato-seeds","provider":"Garden Heirloom Seeds","version":"1.0","type":"link"}