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how to incubate seeds

Place seed-starting containers on the bottom of an incubator. Foam cups, peat pots or multiple-cell trays can be used as seed-starting containers.

Check the seeds daily for germination. Many kinds of seeds germinate within seven to 10 days, but seeds of some perennials and herbs may take 21 or more days to germinate. Refer to the seed packet or product description to determine the expected days to germination for your specific seeds.

Plant seeds at the planting depth specified on their packet or label, and cover them with the seed starter. Seeds usually are planted no deeper than their diameter, according to an Organic Gardening website article. Plant tomato and pepper seeds at a depth of 1/4 inch.

Set the incubator’s temperature at the appropriate temperature for your seeds. Tomato seeds germinate best in soil that is 75 to 90 degrees Fahrenheit, and pepper seeds germinate best in soil 70 to 95 degrees Fahrenheit.

Moisten seed starter, a soilless planting medium. Fill each seed-starting container to within ½ to 1 inch of its rim with the moist seed starter. Leaving space at each container’s top allows room for watering seedlings.

For many people getting seeds to germinate is one of the hardest things to do in the world of gardening.
This simple incubator not only makes germination easy, it provides a springboard into hydroponics as the plant will not have any soil-borne diseases.

That’s all for now,

Introduction: How to Make a Simple Incubator for Germination

Reply 12 years ago on Introduction

Line the inside of the box fill it about 3/4 of the way up. with water.
Then tape down the edges.

Did you make this project? Share it with us!

Used to direct heat upward toward planted seeds.

We cover the cups with plastic wrap to trap evaporating water and increase humidity. This also helps to trap heat within the cups, making it easier to achieve our target temperature. The heating mats we’re using aren’t too hot and add around 10°F when the cups aren’t covered. When covered with plastic wrap, the heating mechanism is more efficient and we’re able to maintain the desired 81-85°F.

Foam Insulating Board

For simplicity, this page is dedicated to optimizing the soil environment for sprouting pepper seeds and doesn’t address choice of soil, watering or fertilization which are also important. Please see our Step by Step Growing Guide for more information on those topics.

Two 20″x10″ mats; large enough for twenty-five 4″ seed cups.

Used to soak up spilled water and wick it away from heating mats.