Package of Johnny's Selected Seeds
Package of Johnny's Selected Seeds
Online Tools for Planning & Planting

Interactive Tools & Calculators

Plan

  • Seed Calculator »
    This tool helps you configure the number of seeds or plants you will need for a given amount of space.
  • Target Harvest Date Calculator (XLS) »
    Use this tool to coordinate production of one of more crops for harvest by a user-defined target date or otherwise important event.

Plant

  • Fall-planting Calculator (XLS) »
    This spreadsheet calculator works backward from your first frost date to determine the date to start seeds for crops that will mature as it gets cold.
  • Seed-starting Date Calculator »
    This tool figures the dates when it's safe to plant outside, based on the frost-free date that you specify.
  • Caterpillar Tunnel Worksheet (XLS) »
    This spreadsheet will help you determine costs to build a high tunnel at a given length using Johnny's recommended materials.
  • Succession Planting Calculator (XLS) »
    This spreadsheet calculator allows you to input the date of your first planting of each crop, then it calculates the dates for later plantings. It also allows you to input your first frost date, counting back the appropriate number of days to determine the last date to plant and still get a crop before frost.
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Grow

  • Grower's Library  »
    A compendium of helpful product information files, manuals, charts, growing guides, articles and more from our Grower's Library.
  • Flower Growing Guide (PDF) »
    This chart is designed to help you select the best flowers for your situation. Chart includes application, germination time, transplant information, days to harvest, and helpful growing information.
  • Herb Growing Guide (PDF) »
    This chart will help you plan your herb growing strategy. The chart includes germination time, transplant information, and days to harvest.
  • Growing Ideas »
    Johnny's Blog
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