How to Plant and Grow Forget-Me-Nots

Forget-me-nots are a colorful and sweet addition to any garden or landscape, symbolizing love, devotion, and respect. The most common species, Myosotis sylvatica, is known for its sky-blue flowers, but the flowers can also be found in light purples, pinks, and whites. Depending on the species, forget-me-nots can be annuals, biennials, or short-lived perennials, Chad Massura, co-founder of Rosy Soil, says. Find out everything you need to know about how to plant, grow, and care for forget-me-nots below.

Forget-Me-Not Care Tips

Forget-me-nots are relatively maintenance to grow and they're known for their self-seeding ability, meaning they can quickly spread to other areas of the garden if not managed. Follow the guidelines below for the best results.

Light

Forget-me-nots can thrive in both partial to full sunlight. However, they prefer a location with dappled sunlight, especially in warmer climates, to prevent excessive heat stress, Massura says.

The proper light conditions for forget-me-nots will also depend on your location, Keegan Nesvacil, CEO and co-founder of Woodland Tools Co., says. "In the north of the United States, they will do well in both full sunlight and partial shade," he explains. "If you live in a southern climate, it is best to plant them in a location where they receive full morning sunlight, but then also get some afternoon shade."

Soil and Water

Forget-me-nots do best in moist, well-draining soil. "A rich, humus soil with good fertility is ideal," Massura says. "A slightly acidic to neutral pH is suitable for their growth. Using a biochar-based soil, like Rosy Soil, can enhance soil health, improve water retention, and provide a nutrient-rich environment."

"The first thing to note with forget-me-nots is that the soil should always be moist," Nesvacil says. "To check this, you can insert your finger about an inch deep in the soil. If it's dry, you know it's time to water. In addition, you can look for visual cues [from your plant], such as wilting or droopy leaves—but it's best to not wait until they reach this point because it will limit their ability to thrive."

Temperature and Humidity

Forget-me-nots prefer cooler temperatures, ranging from 50 F to 70 F, and moderate humidity, Massura says.

According to Keegan, temperatures shouldn't reach higher than 75-80 degrees in order for your forget-me-nots to thrive. "If your climate is warmer than that, it is critical that they get some afternoon shade," he explains. And, for humidity, he adds, "While they will survive in high humidity climates, they are more prone to diseases which will prohibit them from thriving."

Fertilizer

According to Keegan, forget-me-nots don't require heavy fertilization, but they can benefit from a general-purpose fertilization once a year. "This is especially important if you live in an area with poor soil health," he explains.

Massura recommends applying a balanced, all-purpose fertilizer in early spring. "Follow the recommended dosage on the fertilizer packaging, and avoid over-fertilizing to prevent excessive foliage growth at the expense of flowers," he says.

Potting and Repotting

If you're growing forget-me-nots in containers, they can be repotted every two to three years, or when you notice the plant outgrowing its current container. "It's advisable to choose a slightly larger pot to accommodate healthy root growth," Massura advises. "Consider repotting during periods of lower stress for the plant, such as in early spring or fall, and avoid disturbing the plant during its flowering phase."

Pests and Problems

Here's the good news: forget-me-nots are generally pretty pest-resistant. However, they can be subject to aphids, which can suck the sap out of the plants.

It's also important to note that the self-seeding ability of forget-me-nots can be an issue if not well-maintained. The plant can spread aggressively and displace native plants. To keep them from spreading to other areas of your garden or landscaping, be sure to deadhead blossoms to prevent them from dropping too many seeds.