Growing sunflowers in Vermont is an incredibly rewarding and enjoyable experience. Vermont is a great place to grow sunflowers due to its cool climate and long growing season. Sunflowers thrive in the sunny and slightly acidic soil of the state and are a popular choice among gardeners.
These tall flowers provide abundant amounts of color and joy to any garden and can be started from seed or transplanted from a nursery. They require little maintenance and are a great choice for beginner gardeners, or those looking to add a splash of color to their outdoor space. Plus, sunflowers are a great source of food for birds and other wildlife, making them a great addition to any backyard.
Vermont’s climate and growing zones
Zone 3b includes the highest elevations in Vermont and is generally the coldest area in the state. Winters in this zone are long and harsh, with average temperatures ranging from -20 to -10 degrees Fahrenheit. Summers are relatively short, with temperatures that rarely exceed 70 degrees. This zone is best suited for cold-tolerant plants such as evergreens, ornamental grasses, and shrubs.
Zone 4a is slightly warmer than Zone 3b, with average winter temperatures ranging from -15 to -5 degrees Fahrenheit, and summer temperatures reaching up to 80 degrees. This zone is best for hardy trees, shrubs, and perennials that can withstand cold winters.
Zone 4b is located in the western part of Vermont and is the warmest zone in the state. Winter temperatures can range from 0 to 10 degrees Fahrenheit, and summers are hot and humid, with temperatures reaching around 85 degrees. This zone is ideal for a variety of plants, including vegetables, herbs, and flowers.
Zone 5a is located in the eastern part of Vermont and is slightly cooler than Zone 4b. Winter temperatures in this zone average between -5 and 5 degrees Fahrenheit, while summer temperatures reach up to 85 degrees. This zone is best for cold-tolerant plants such as evergreens, ornamental grasses, and shrubs.
Zone 5b is located in the southern part of Vermont and is the warmest zone in the state. Winter temperatures average between 0 and 10 degrees Fahrenheit, and summer temperatures reach up to 90 degrees. This zone is best for vegetables, herbs, and flowers.
Growing sunflowers in Vermont
Growing sunflowers in Vermont can be a rewarding and enjoyable experience. The climate in Vermont is cold and unpredictable, making it difficult to grow some plants and flowers. Sunflowers, however, are robust and hardy flowers that can thrive in colder climates.
When growing sunflowers in Vermont, it is important to choose the right variety. Certain varieties of sunflowers are better suited to cold climates, such as the Mammoth Grey Stripe and the Velvet Queen. These varieties are known for their large, colorful blooms and their ability to withstand fluctuating temperatures.
When planting sunflowers in Vermont, it is important to choose a location that receives plenty of sunlight. Sunflowers need at least 6 hours of direct sunlight every day to ensure healthy growth. It is also important to choose a location with well-draining soil. Sunflowers do not tolerate standing water, so the soil should be able to absorb and drain excess moisture quickly.
The timing of planting is also important when growing sunflowers in Vermont. Sunflowers should be planted after the last frost of the season, usually in late April or early May. If planted too early, the sunflowers may not survive the cold temperatures. It is also important to water the sunflowers regularly. Sunflowers need at least an inch of water per week, either from rainfall or manually.
Vermont has a short growing season, so it is important to take advantage of the warmer months. Sunflowers need plenty of warmth to thrive and reach their full potential. Warm climates are ideal for growing sunflowers, as the higher temperatures encourage healthy growth.
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 Vermont
Sunflower seeds should be started indoors 4 weeks before your final frost date. In Vermont, the final frost dates are:
- Zone 3: Around May 15th
- Zone 4: Around May 12th
- Zone 5: Around April 30th
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 3: Around April 17th
- Zone 4: Around April 14th
- Zone 5: Around April 1st
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 Vermont
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 Vermont
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!