DIY Simple Seed Starting Mix: Give Your Seeds the Best Start

Starting seeds successfully begins with the right soil. You want a mix that’s light, airy, and nutrient-rich — the perfect environment for delicate roots to grow strong and healthy. Here’s a simple, foolproof recipe that works for most seeds, from herbs to leafy greens.

Simple Seed Starting Mix Recipe

Ingredients:

• 2 parts coconut coir or peat moss

• 1 part perlite or vermiculite

• 1 part compost (well-aged)

Optional Boosters:

• A handful of worm castings for extra nutrients

• A pinch of garden lime to balance pH if using peat

Instructions:

1. Combine all ingredients in a large container until evenly mixed.

2. Moisten slightly — it should feel like a wrung-out sponge, not soaking wet.

3. Fill your seed trays or small pots with the mix.

4. Plant seeds according to the packet directions, gently pressing them into the soil.

5. Keep trays in a bright spot or under grow lights, and lightly mist to maintain consistent moisture.

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Tips for Success

• Provide plenty of light: Seedlings need bright light to grow strong. A sunny windowsill or grow light works well.

• Keep a stable temperature: Most seeds germinate best between 65–75°F.

• Water carefully: Overwatering can compact the soil and damage roots. Mist gently or water from the bottom.

• Label everything: Keep track of your seedlings so you know what’s growing where.

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Why Make Your Own Mix

Creating your own seed starting mix allows you to control texture, nutrients, and moisture retention which are all important for strong, healthy seedlings. It’s also budget-friendly and easy to adjust for different types of seeds.

Healthy seedlings start with healthy soil. With this simple mix and a little attention, your seeds will get the perfect start and grow into thriving, productive plants.