When to Plant Impatiens Seeds

Starting impatiens from seeds will require warm soil temperatures to facilitate germination, so we suggest starting them indoors. Start them indoors about six to eight weeks before the final frost in spring.

Where to Plant Impatiens Seeds

When ready for transplant, Impatiens will thrive in partial shade conditions. However, while beginning seeds indoors, they do best being in a bright, sunny location with lots of indirect sunlight.

How to Plant Impatiens Seeds

Impatiens seeds require light to germinate, so be careful not to cover them when planting. Learn more about germination light requirements here.

Light and warmth are the key ingredients to get Impatiens seeds to grow. When germinating impatiens, the soil needs to be maintained between 70ºF and 75°F, otherwise the seeds may be susceptible to rotting within the soil. Start in individual pots or small tray cells with peat-light mix or sterilized soil mix – fill your cells/pots with the mix, then water with warm water before sowing your seeds. Once the cells/pots have drained, water with warm water once again, and then sow your seeds once the soil has cooled to being comfortable to the touch. Sow the seed onto the surface of the soil and compress, but do not cover. Place flats/pots on bottom heat that will provide a consistent temperature between 70°F and 75°F, in an area that gets full sunlight. Watering from the bottom during germination is recommended, and germination will usually take 14 to 21 days. Once outdoor soil temperatures are consistently above 55°F, and the threat of frost has passed, impatiens can be transplanted outdoors.

How to Care for Impatiens 

Impatiens prefer rich, well-draining soil that remains moist, but not wet. Water regularly, and add a general purpose fertilizer monthly as needed.