/

🌾 Seed Starting Supply Calculator

Estimate supplies and cost to start seeds indoors — trays, heat mats, grow lights, and soil mix.

Project Details

Number of Varieties (types)

Cells per Variety (cells)

6-12 cells per variety gives room for thinning

Grow Light?

Heat Mat?

Your Estimate

—

Adjust the fields to see your estimate.

Cost Breakdown

Recommended Tools & Supplies

Seed Trays with Domes

Humidity dome speeds germination

Warms soil to speed germination

Essential if you don't have a sunny south window

Seed Starting Mix

Lighter than potting soil — better for tiny roots

Track what you planted where

Water seedlings gently without disturbing roots

Pro Tips

✓ Start seeds 6-8 weeks before your last frost date
✓ Bottom watering prevents damping off — set trays in water and let soil wick up
✓ Harden off seedlings by putting them outside for increasing hours over 7-10 days
✓ Most seeds germinate best at 70-80°F soil temperature

Prices are estimates. Links go to Amazon — we may earn a small commission at no extra cost to you.

Shop These Items on Amazon

More Gardening & Growing Calculators

Drip Irrigation

Container Garden

Grow Light Setup

Hydroponic Garden