
On entering your last 10-hour day of the year, this calculator displays a range for your earliest and latest seeding dates as well as the seedling transplant date, for each of 25 flower crops suitable for overwintering. Seeding Date Calculator Workbook (XLSX).This spreadsheet calculator works backward from your first fall frost date, to determine the best date on which to start seeds for crops that will mature successfully as summer warmth and light wane into the fall. Fall-Harvest Planting Calculator Workbook (XLSX).Determine seeding date relative to a specific harvest date. Use this tool to coordinate production of one of more crops for harvesting by a particular user-defined target date or otherwise important event. Target Harvest Date Calculator Workbook (XLSX).It also allows you to input your first fall frost date, counting back the appropriate number of days to determine the last date to plant and still get a crop before frost. This spreadsheet calculator allows you to input the date of your first planting of each crop, then it calculates the dates for later plantings. Succession-Planting Calculator Workbook (XLSX).This tool figures the dates for starting seedlings indoors and for safely planting particular early crops outside, based on the frost-free date that you specify. Seed-Starting Date Calculator for Seedlings.This spreadsheet will help you determine costs to build a fixed, 24'-wide traditional elliptical high tunnel of a given desired length using materials suggested by Johnny's Stationary Traditional Elliptical High Tunnel Worksheet Workbook (XLSX).

This spreadsheet will help you determine costs to build a modular moveable, 14'-wide cathedral high tunnel using materials suggested by Johnny's. Moveable Modular Gothic Cathedral High Tunnel Worksheet Workbook (XLSX).This spreadsheet will help you determine costs to build a stationary, 14'-wide cathedral high tunnel with traditional style coverings. Stationary Traditional Gothic Cathedral High Tunnel Worksheet Workbook (XLSX).This spreadsheet will help you determine costs to build a moveable, 12'-wide caterpillar high tunnel of a given desired length using materials suggested by Johnny's. Moveable Caterpillar High Tunnel Worksheet Workbook (XLSX).This spreadsheet will help you determine costs to build a stationary, 12'-wide traditional high tunnel of a given desired length using materials suggested by Johnny's. Stationary Traditional High Tunnel Worksheet Workbook (XLSX).This spreadsheet will help you determine costs to build a stationary, 12'-wide caterpillar high tunnel of a given desired length using materials suggested by Johnny's. Stationary Caterpillar High Tunnel Worksheet Workbook (XLSX).Average Plants per Seed Quantity & Average Yield CHART.Average Seed Quantity Needed & Average Yield per Row or Acre CHART.

The following 2 charts also serve as reference.

This is an interactive tool to help you predetermine the number of seeds or plants you will need for a given amount of space.
