Growing sunflowers in New Mexico is a great way to add a burst of color to your garden! Sunflowers thrive in the warm, sunny climate of New Mexico, and with the right conditions, you can have a beautiful array of sunflowers in no time.
Sunflowers are also known for their ability to attract a variety of beneficial insects, such as bees and butterflies, to your garden. Whether you’re looking for a striking flower to add a pop of color to your yard or a way to attract more pollinators, sunflowers are the perfect addition to any New Mexico landscape.
New Mexico’s climate and growing zones
Zone 4 in New Mexico is characterized by cold winters and mild summers. The average annual temperature is between -25 and 5 degrees Celsius (13 to 41 degrees Fahrenheit). This zone is suitable for plants that can tolerate cold temperatures and require little moisture, such as some conifers, junipers, and evergreens.
Zone 5 in New Mexico enjoys mild winters, with temperatures rarely dropping below -15 degrees Celsius (5 degrees Fahrenheit). Summers are hot in this zone, with temperatures reaching upwards of 35 degrees Celsius (95 degrees Fahrenheit). This zone is suitable for shrubs, trees, and other plants that can tolerate heat, such as roses, pomegranates, figs, and some citrus trees.
Zone 6 in New Mexico has hot summers, with temperatures reaching up to 37 degrees Celsius (100 degrees Fahrenheit). Winters are mild, with temperatures rarely falling below -5 degrees Celsius (23 degrees Fahrenheit). This zone is suitable for many fruit trees and vegetables, as well as some cold-sensitive plants such as hibiscus, oleander, and some palms.
Growing zones 7 through 9
Zone 7 in New Mexico has hot summers, with temperatures reaching up to 39 degrees Celsius (102 degrees Fahrenheit). Winters are mild, with temperatures rarely falling below -2 degrees Celsius (28 degrees Fahrenheit). This zone is suitable for many tropical plants, such as bougainvillea, hibiscus, and citrus trees.
Zone 8 in New Mexico has hot summers, with temperatures reaching up to 41 degrees Celsius (106 degrees Fahrenheit). Winters are mild, with temperatures rarely falling below 0 degrees Celsius (32 degrees Fahrenheit). This zone is suitable for many warm-weather plants, such as palms, citrus trees, and various succulents.
Zone 9 in New Mexico is the warmest zone in the state, with temperatures reaching up to 43 degrees Celsius (109 degrees Fahrenheit). Winters are mild, with temperatures rarely falling below 5 degrees Celsius (41 degrees Fahrenheit). This zone is suitable for many tropical plants, such as bougainvillea, banana trees, and various palms.
Growing sunflowers in New Mexico
Growing sunflowers in New Mexico can be a rewarding experience, as the state offers a great climate for tall, sun-loving plants. Although the climate in New Mexico can be a bit chilly in the winter, the state generally enjoys plenty of sunshine and warm weather in the growing season. This makes it an ideal location for cultivating sunflowers, which require at least six hours of direct sunlight each day to thrive.
In the spring and summer months, sunflowers in New Mexico can enjoy temperatures that are warm enough to allow for germination, rapid growth, and blooming. With ample amounts of sun and water, sunflowers in New Mexico can reach heights of 8-10 feet tall, with beautiful yellow blooms that can reach up to 12 inches in diameter. If you are growing your sunflowers in a container, make sure to use a pot with good drainage and a soil mix specifically designed for sunflowers.
In the winter months, however, the climate in New Mexico can become quite cold and even frosty. This can make it difficult for sunflowers to successfully germinate and survive the season. If you do decide to grow sunflowers in New Mexico during the winter, you may need to provide additional protection for them, such as a cold frame or greenhouse. Additionally, you may need to wait to plant your sunflowers until the temperatures have warmed back up in the spring.
Some of my favorite varieties of sunflower include:
- Mammoth Grey Stripe Sunflower (Helianthus annuus) – 75-100 days to maturity
- Teddy Bear Sunflower (Helianthus annuus) – 60-90 days to maturity
- Red Sun (Helianthus annuus) – 65-95 days to maturity
- Autumn Beauty Sunflower (Helianthus annuus) – 75-90 days to maturity
- Lemon Queen Sunflower (Helianthus annuus) – 75-95 days to maturity
- Velvet Queen Sunflower (Helianthus annuus) – 90-110 days to maturity
- Dwarf Sunspot Sunflower (Helianthus annuus) – 60-90 days to maturity
- Giant Sungold Sunflower (Helianthus annuus) – 85-110 days to maturity
- Evening Sun Sunflower (Helianthus annuus) – 75-95 days to maturity
- Sundance Kid Sunflower (Helianthus annuus) – 75-95 days to maturity
When to start sunflowers indoors in New Mexico
Sunflower seeds should be started indoors 4 weeks before your final frost date. In New Mexico, the final frost dates are:
- Zone 4: Around May 12th
- Zone 5: Around April 30th
- Zone 6: Around April 21
- zone 7: Around April 3
- zone 8: Around March 28th
- zone 9: Around February 28th
You should also consider the size of the variety of sunflower you are planting, as shorter varieties can be planted later and taller varieties will need to be started a week or two earlier. Sunflowers should be started indoors:
- Zone 4: Around April 14th
- Zone 5: Around April 1st
- Zone 6: Around March 24th
- zone 7: Around March 6th
- zone 8: Around February 27th
- zone 9: Around January 31st
Starting sunflowers from seed is a relatively easy process that can be done both indoors and outdoors. To begin, you will need to purchase sunflower seeds from a garden center or online. When selecting seeds, make sure to look for the desired variety you want to grow. Once you have your seeds, you can choose to start them indoors 4 weeks before the last frost date for your region.
Fill a seed tray with starter soil and moisten it with a spray bottle. Place your seeds on top of the soil, cover them lightly with starter soil, and water them gently. Place the tray in a warm and sunny spot, and keep the soil moist. Once your plants have grown 2-3 sets of leaves, you can transplant them outdoors.
Planting sunflowers outside in New Mexico
Sunflower seeds should be planted outdoors after the last average frost date for your area. Planting sunflower seeds too early can result in poor germination and seedling growth and potentially death if there’s a hard freeze.
When planting outdoors, make sure the area has plenty of sunshine and well-draining soil. Dig a hole that is twice the size of the root ball, and fill the hole with compost or aged manure. Place the seedling in the hole and backfill with soil, then water deeply.
For the remainder of the sunflower’s life, make sure to keep the soil moist and fertilize regularly. With proper care, you should have beautiful sunflowers in no time!
When to harvest sunflower seeds in New Mexico
When sunflower seeds are ready to be harvested, the back of the flower head will be dry and start to turn brown. The individual seeds will be dry and firm. The green husks surrounding the seeds will have turned yellow or white and begun to dry out. To check if the seeds are ready to be harvested, lightly pinch the seed head between your thumb and forefinger. If the husks break open easily, the seeds are ready to harvest.
Harvesting sunflower seeds is easy. Cut the flower head off the stem and spread it out on a clean surface. To remove the seeds, use your hands to rub the flower head and release the seeds. Collect the seeds in a large bowl or container. Once the seeds are harvested, store them in an airtight container in a cool, dry place. Make sure the container is well sealed to keep the seeds from going bad. Sunflower seeds can last for up to a year if stored properly.
Sunflower seeds are delicious and nutritious snack food. They can be eaten raw, toasted, or sprouted. Sunflower seeds are also used in salads, cereals, granola, and energy bars. They are loaded with essential vitamins and minerals like Vitamin E, phosphorus, magnesium, and zinc. Sunflower seeds can also be used to make sunflower seed butter, which is a great alternative to peanut butter.
In addition to being a healthy snack, sunflower seeds are also used to make birdseed. You can leave your sunflowers intact outside well after the flowers have died to give your local birds a tasty snack!