When do I start my seeds indoors? Johnny's Seeds has a great interactive seed starting guide. You enter your last frost date and the table tells when to start a large variety of vegetable and flower seeds indoors for Spring planting. Great tool!
Johnny's guide to starting seeds indoors and transplanting outdoors, according to your frost date
Seed starting calculator --- When to start seeds and when to set plants out, for veggies & flowers.
The best mail order seed company ever. Their super sweet bi-color corn is amazing! We buy from them every year, and they have the BEST customer service!
Tools and Calculators
Interactive Seed Calculator - vegetables - choose crop, direct sow or transplant, number of feet of row....
Making Soil Blocks For Seed Starting – Gardening » The Homestead Survival
Interactive tools: to calculate seeds per feet, build a caterpillar tunnel, etc at Johnny Seed
Make it: Row marker idea from Johnny's seed inspired by Elliot Coleman.
Seed Planting Calculator -- awesome! Just input your area's last frost date and bam!