How to Grow Annuals Indoors

Overview

Annuals are plants that live for just one growing season, germinating from seed, flowering and producing new seeds all within a span of less than one year--sometimes, just a few months. Some annuals, like impatiens and geraniums, are actually perennials that die off due to frost or other extreme outdoor weather conditions. Both varieties can be grown indoors.

Step 1

Fill cup with perlite or coarse sand and then soak with water.

Step 2

Take stem cuttings from hardy annuals such as impatiens, geraniums, coleus or verbena. To make a proper stem cut, slice across one of the plant's thicker branches close to where it meets the main stem; remove any flowers or buds so they don't sap any energy from the plant as it starts to grow a new root structure.

Step 3

Create a hole in the cup of perlite or coarse sand with your finger or the blunt end of a pencil, one to two inches deep. Stick the stem cutting in the hole and then gently massage the sand to fill the hole.

Step 4

Allow the stem cutting to take root. The roots of most annuals should start growing after a week; water as needed to keep the soil moist.

Step 5

Fill the planter box with potting soil and water thoroughly.

Step 6

After the cuttings have developed healthy root structures, transplant them into the planter box and place it in the windowsill in a bright, sunny location. On cloudy days or during the day when the windowsill does not get sun, you may use a grow light.