Friso

Friso lily bulbs should be planted in a sunny location, where they get at least 6-8 hours of sunlight, with well-draining soil. The planting depth should be 3 times the height of the bulb. Plant the bulbs with the pointed end facing up and the flat end down. Space the bulbs about 8 inches apart and water thoroughly after planting.

Fertilize the bulbs with a bulb-specific fertilizer every 2-4 weeks during the bloom season. In the winter, protect the bulbs from freezing temperatures with a layer of mulch. In the spring, as soon as the shoots emerge, remove the mulch and continue to water regularly.

Friso lily bulbs are generally considered hardy in USDA climate zones 3-9 and can survive in the ground over winter in certain climates. However, the success of leaving them in the ground depends on several factors, including the severity of the winter in your area, the soil drainage, and the location of the planting site.

It's generally recommended to protect the bulbs with a layer of mulch to insulate them from extreme temperature fluctuations and to prevent the soil from freezing too deeply. In colder regions, it may be safer to lift the bulbs and store them indoors until spring, but in milder regions, leaving them in the ground may be a viable option.

The best month to plant Friso lily bulbs depends on the climate and growing conditions in your area. Generally, it is recommended to plant lily bulbs in the fall, between September and November, when soil temperatures are cool and the bulbs can establish roots before the winter freeze.

But another great option is to plant your Friso lily bulbs in the spring, as soon as the ground is workable. Although your lilies will blooms this summer, be aware that they may not have enough time to establish roots before the summer heat and they won’t grow to their full potential. It's important to avoid planting lily bulbs during periods of extreme heat or drought, as this can stress the plants and reduce their chances of survival.

Overall, the key is to choose a time when the soil is cool and moist, but not waterlogged, and to plant the bulbs at a depth of three times their diameter, with the pointed end facing up. With proper planting and care, Friso lilies can thrive and produce beautiful blooms in the summer months.

Friso lilies prefer a balanced fertilizer that provides equal amounts of nitrogen, phosphorus, and potassium (N-P-K). A good option is a 10-10-10 or 15-15-15 fertilizer, which can be applied every two to four weeks during the growing season. It's important to follow the manufacturer's instructions for application rates, as over-fertilizing can lead to burned leaves and stunted growth.

Additionally, Friso lilies benefit from supplemental micronutrients such as iron and magnesium, which can be provided through a foliar spray or added to the soil. Overall, a balanced fertilizer regimen with appropriate micronutrient supplementation will ensure healthy growth and abundant blooms for Friso lilies.