Idaho’s climate varies across the state, but it generally experiences cold winters and hot, dry summers. Here’s a list of annual flowers that are well-suited for growing in Idaho:

Marigolds (Tagetes): These hardy flowers thrive in full sun and well-drained soil. They come in various colors and add vibrant hues to your garden.

Zinnias (Zinnia elegans): Zinnias are easy to grow and produce beautiful, colorful blooms throughout the summer. They prefer full sun and well-drained soil.

Petunias (Petunia x hybrida): Petunias are versatile and come in a wide range of colors. They are great for hanging baskets, containers, or as bedding plants. They enjoy full sun to partial shade.

Snapdragons (Antirrhinum majus): Snapdragons produce tall spikes of flowers in various colors. They can withstand cooler temperatures and are a popular choice for adding vertical interest to gardens.

Cosmos (Cosmos bipinnatus): Cosmos flowers are known for their delicate, daisy-like blooms and feathery foliage. They are drought-tolerant and thrive in full sun.

Nasturtiums (Tropaeolum majus): Nasturtiums have vibrant, edible flowers and attractive round leaves. They prefer well-drained soil and can tolerate some shade.

Alyssum (Lobularia maritima): Alyssum is a low-growing annual with tiny, fragrant flowers. It is perfect for borders, rock gardens, or as a ground cover. It prefers full sun but can tolerate some shade.

Bachelor’s Button (Centaurea cyanus): Bachelor’s Button, also known as cornflower, produces blue, pink, or white flowers. It prefers full sun and well-drained soil.

Calendula (Calendula officinalis): Calendula, or pot marigold, has bright orange or yellow flowers. It can tolerate cooler temperatures and prefers full sun.

Sunflowers (Helianthus annuus): Sunflowers are iconic annuals that thrive in Idaho’s sunny conditions. They come in various sizes and can add a cheerful touch to your garden.

Remember to consider your specific location within Idaho, as microclimates and variations in elevation can affect the growing conditions. Additionally, it’s important to check the specific growing requirements for each plant and adjust your care accordingly.