Indoor Seed Starting Plan (Weekly Schedule)

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This indoor seed sowing plan simplifies everything! Follow the printable chart and organize your seeds into logical sowing groups. You will save time, and your new plants will be ready for transplanting after last frost.

This is part of a series, Indoor Seed Starting for Beginners | Sow Indoors Grow Outdoors, where I walk you through the process from seed to garden. It’s all the information I wish I had when I was getting started.

A calendar and seedlings to help grow plants right on time.

Simple Indoor Seed Starting Plan | Free Printable

This is an excerpt from the ebook, Seed Starting for Beginners: Sow Inside Grow Outside, sharing everything you need to know to start your own garden plants from seeds indoors.

If you would like the entire ebook with all the printable lists in one handy file, you can save it instantly here.

Easy Seed Sowing Schedule

The sowing instructions on seed packets tell us how many weeks before our average last frost date seeds should be started indoors. This can range from 3 to 12 weeks or more, depending on the plant type.

To keep it simple, I use this streamlined sowing system. The seeds are grouped by start times in two-week intervals.

Sowing Groups

This includes veggies, herbs, fruits, perennials, and flowering annuals. This printable guide is included with the free, printable seed sowing schedule (below).

Group 1: 12 weeks / 90 days before last frost
Group 2: 10 weeks / 75 days
Group 3: 8 weeks / 60 days
Group 4: 6 weeks / 45 days
Group 5: 4 weeks / 30 days

Here’s an example

My last frost is approximately May 15.

I start my slowest growing seeds (Group 1) in late February, 12 weeks before this.

Then, every two weeks I start a new group until it’s outdoor planting time.

Seeds that do best with direct (outdoor) sowing go in after the risk of frost has passed.

If I do not have a good spot in the garden for a plant, I put it in a container. That allows me to control both the soil and the light.

The free file lets you do this for your zone.

Find Your Frost Dates & Hardiness Zone

Plant Hardiness Zones | United States | Canada
These are listed on seed packets and plant tags to guide your choices.

Average Frost Dates | Use this calculator at Almanac.com. Enter your city and state or province to find your first and last frost dates and number of frost-free days.

Free Printable Seed Sowing Schedule

This seed sowing schedule is free to save to your device.

It’s a PDF document you can view in Adobe Reader and print out if you prefer.

Use it as the starting point and fill in the slots with your seed choices.

I’ve listed the sowing groups and seed examples to get you started.

How to Save Free Printables to Your Device

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Enjoy!