The Best Flowers to Plant in the Month of May: Your Ultimate Guide

Who doesn’t like to look at brightly-colored gardens? The good news is that with proper care, you can proudly look at your yard and enjoy plenty of blooms! But to achieve the results you dream of, careful plant selection is a must.And if you are unsure about what flowers to plant in May, keep reading.

Even if not many people are into planning their landscapes to get the most out of their plants’ flowering season, it is something that you should consider doing. 

Here, we include everything you must know to take your garden to the next level. And you know what the best part is? May is one of the best times of the year to plant flowers as the risk of frost is over in most regions.

Flowers to Plant in May

Most summer seeds will germinate and grow faster in May because of the warm soil! Here are some Flowers to Plant in May. 


Flowers to Plant in May

If you want to add a splash of color to your yard, there might not be a better option than adding sunflowers to your garden, especially if you live in the United States, where these plants originated!

When planting them in May, you can expect the seeds to germinate within four to six days: under ideal conditions, these flowers will rapidly mature by the end of August.

If you are a beginner gardener, you’ll love growing sunflowers: they are relatively easy to grow and tolerate various soil conditions if you ensure adequate sunlight and enough moisture.

If necessary, improve the nutrient content in your substrate by adding manure or compost. Also, ensure you have the space to let these plants thrive: sunflowers can grow up to four or five feet tall!


Flowers to Plant in May

These delicate-looking flowers are perfect for planting in May. But don’t be fooled by their appearance: these perennials do well in most weather conditions.

Plus, they are relatively easy to care for and will stand even the hottest temperatures, provided that you keep them moist. Their lavender color will brighten your flower bed!


Flowers to Plant in May

Another popular flower you should consider planting in May is the Marigold. This versatile plant is easy to care for and adapts well to most conditions. You can find them in different varieties, making it easy to pick a flower that suits your taste!

You can select among species that only grow up to eight inches tall or bigger ones: the final choice will come down to your preferences!

If you have a vegetable garden, you may benefit from planting marigolds: these plants are ideal companions to most veggies as they contribute to deterring pests and attracting beneficial insects.


Snapdragons are annuals with upright forms that will bloom all summer long under the ideal conditions. If you live in a colder region and struggle to find a plant that will do well in your weather, snapdragons might be your best option.

These plants are more cold-hardy than others we included in this list! Also, they are perfect to create bouquets or compositions to keep in vases for interior decor as the blooms are long-lasting.


Flowers to Plant in May

Zinnias are annual plants you should plant in May to enjoy during the summer. They are native to Mexico and appear in various colors and sizes. Because of their origins, these plants prefer warm climates.

Plant them in well-draining and fertile soils and consider putting them under partial shade if you live in a hot region.

Consider growing them in containers or window boxes: they will brighten your property with vivid colors! Zinnias can look gorgeous when you plant them in masses!


Another excellent option if you are looking for flowers to plant in May is lobelias.

These low-growing annuals perform better in cooler weather and might need regular pruning to maintain an attractive shape. Besides that, they are relatively easy to grow!


If you are looking for a versatile flowering plant, cosmos might be your best solution, especially if you want to add a splash of color to your garden. But beware: you must have the space to grow them as they might grow up to two to three feet tall and about 1 foot wide.

Under the ideal conditions, cosmos flowers germinate rather quickly. Also, don’t worry if you live in a hot region: these plants are tolerant to drought and won’t mind extreme temperatures (as long as you take proper care of them).

Related Article: Plants That Attract Flies