Growing Impatiens from Seed: Temperature Tips for Success

Many gardeners wonder if using different temperature stakes in clay pots will affect impatiens growth. The answer is straightforward: it makes no difference in the growth habit once the plants are established. The only time soil temperature matters is during seed germination.

Impatiens seeds need warmth to sprout, with an optimal range of 70°F to 80°F. Cooler soil below 70°F simply slows germination. However, once the seedling develops two or more true leaves, it grows equally well between 55°F and 80°F. Temperatures outside that range—colder or hotter—will stunt growth.

So focus on providing consistent warmth for germination, then maintain moderate conditions for healthy seedlings.