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Category: Germination

link to Seed Starting Mix Recipe: How to Make a DIY Mix That Actually Works

Seed Starting Mix Recipe: How to Make a DIY Mix That Actually Works

A simple, research-backed seed starting mix recipe (1:1:1 peat or coir, vermiculite and perlite), with lime rates, pH and EC targets, coir and worm-casting variations, and fixes for common seedling...

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link to Paper Towel Germination: How to Sprout and Test Seeds Step by Step

Paper Towel Germination: How to Sprout and Test Seeds Step by Step

How to roll, warm and count a paper towel germination test, how long each crop takes, and how to plant the sprouts.

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link to Seed Germination Temperature Chart for Vegetables (°F and °C)

Seed Germination Temperature Chart for Vegetables (°F and °C)

Minimum, optimum and maximum soil temperatures for 24 vegetables, days to emergence at each, and how to set heat mats indoors.

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About Indoor Harvest Lab

Practical, science-based guides to growing food indoors, written by an agricultural scientist and grounded in university extension research and peer-reviewed studies.

Recent Posts

  • Seed Starting Mix Recipe: How to Make a DIY Mix That Actually Works
  • PPFD Chart for Indoor Crops: Light Targets for Seedlings, Greens, Herbs and Tomatoes
  • Microgreens in Winter: How to Keep Trays Growing Fast in a Cold House
  • Growing Wheatgrass at Home: How to Soak, Sow and Harvest in 7–10 Days
  • Microgreens Yield per Tray: Realistic Numbers for 14 Crops (and How to Raise Yours)

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