Here’s a step-by-step guide for preparing your new 4×4 bed for planting and getting the best possible germination and growth. I’ll break it into bed preparation and planting technique so you can follow it like a recipe.

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1️⃣ Preparing the Initial Bed

Step 1: Layering & Filling

Since you already have the frame:

1. Bottom layer (2–3"):

• Use coarse organics — chopped rosemary trimmings, twigs, shredded cardboard, wood chips.

• This provides drainage and slowly decomposes.

  1. Middle layer (4–5"):

• Blend native soil with compost (50/50).

• The native soil adds mineral content, compost adds fertility and microbiology.

  1. Top layer (3–4"):

• Use a loose, high-quality growing mix — compost + potting soil + vermiculite or coconut coir.

• This is the seed zone where you want fine texture and even moisture.

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Step 2: How Dense Should the Soil Be?

• Goal: Firm enough to support roots, loose enough for easy penetration.

• As you add layers:

  • Don’t stomp or overly compact — just gently press with your hands or the back of a rake to settle air pockets.
  • You can water each layer lightly before adding the next to help it settle without crushing structure.

• The top 3–4" should feel like a wrung-out sponge when moist — crumbly, not clumpy.

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Step 3: Testing Soil Readiness

Before planting:

1. Moisture test: Grab a handful, squeeze —

• If water drips, it’s too wet.
• If it falls apart instantly, it’s too dry.

• Ideal: Holds shape lightly, breaks with a gentle poke.

  1. Drainage check:

• Water one corner of the bed deeply.

• Surface should drain within a minute or two; if puddling lasts, mix in more compost and coarse material.

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2️⃣ Planting for the Best Germination

Step 1: Create a Fine Seed Bed

• Just before sowing, lightly rake or fluff the top 1–2" so it’s loose and even.
• Remove large chunks of compost or woody debris — seeds like a smooth contact surface.

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Step 2: Planting Depth

Rule of thumb: Plant seeds 2–3× as deep as their diameter

• Radish, lettuce, arugula: barely cover with ¼" soil
• Beets, carrots: ¼–½"
• Larger seeds (peas, beans): ~1" deep

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Step 3: Soil Contact

• After sowing, gently press seeds into soil with the palm of your hand or the flat back of a trowel.
• This ensures good seed-to-soil contact for moisture uptake — a key factor in sprouting success.

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Step 4: Watering for Germination

• Use a fine spray or watering can rose to avoid washing seeds away.
• Keep top ½–1" of soil consistently moist until seedlings emerge. This may mean watering lightly 1–2× daily in Davis’s August heat.
• Avoid heavy soaking that compacts soil at the surface.

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Step 5: Light & Temperature

• In mid-August, heat can stress germination.

  • For cool-season crops, provide light shade (old sheet, shade cloth, or cardboard propped above bed) during the hottest part of the day until seedlings establish.
  • Warm-loving crops (basil, beans) can take full sun.

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Step 6: Thinning

• Once seedlings have 2–4 true leaves, thin to the final spacing on the seed packet.
• Don’t pull—snip at the soil line to avoid disturbing nearby roots.

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💡 Pro tip for small seeds: Mix them with dry sand before sowing to get more even distribution.

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If you like, I can make you a printable “Bed Prep & Planting Checklist” you can keep with your garden tools so you can follow this every season without having to remember all the steps.

Do you want me to make that?