Interactive Tools from Johnny's Selected Seeds - www.johnnyseeds.com

• Seed Calculator: This tool figures the number of seeds or plants you need for a given amount of space.
• Target Harvest Date Calculator: Use this tool to determine how many crops you might have by a user-defined target date for important event. (.xls spreadsheet file)
• Fall-planting Calculator: 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. (.xls spreadsheet file)
• 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: This spreadsheet will help you determine costs to build a high tunnel at a given length using Johnny's recommended materials. (.xls spreadsheet file)
• Succession Planting Calculator: 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.  (.xls spreadsheet file)
• Growers Library: Download helpful product information files, manuals, charts, growing guides, and more from our Growers Library.
• Flower Growing Guide: This .pdf 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: This .pdf chart will help you plan your herb growing strategy. The chart includes germination time, transplant information, and days to harvest.

USDA Plant Hardiness Zone Map - http://www.usna.usda.gov/Hardzone/ushzmap.html

Mother Earth News - http://www.motherearthnews.com/

University of Illinois Extension - http://web.extension.uiuc.edu/mchenry/

• • Hort Answers
    Learn more about the plants and their problems in your yard and garden.
  • Gardener's Corner Podcast
    Gardening Tips and Techniques from University of Illinois Extension
  • Illinois Vegetable Garden Guide
    A guide for growing, harvesting, and exhibiting vegetables.
  • Wildflowers
    A directory of more than 140 different Illinois wildflowers
  • Selecting Trees for Your Home
    Find the right tree for your home landscape at Selecting Trees for Your Home.
  • Successful Container Gardens
    A guide for choosing a container, selecting soil mixes, choosing and combining plants, fertilizing, watering and grooming basics.
  • Stepping Stones to Perennial Garden Design
    Learn how to design and maintain a perennial garden that will delight you with seasonal beauty year after year.
  • Groundcovers to Know and Use
    Everything you ever wanted to know about groundcovers including a directory of 35 different groundcovers.
  • Common Vegetable Problems
    Learn about common vegetable insect pests and diseases.