Mrs. David's Garden Seeds®

Grow Sunflowers

You should grow sunflowers in your backyard, pictured above. We grow them every year. They are easy to grow and there are many varieties to choose from.

Grow sunflowers and they will make you feel cheery.Grow sunflowers and they will make you feel cheery.

When we lived in Colorado Springs, we planted a whole row of Mammoth Grey Stripe Sunflowers right next to a tall wooden fence. They are the dinner plate sunflowers that grow six feet tall with heads that are about 12 inches across. The neighborhood squirrels climbed up the fence and ate the seeds, right before we harvested them, much to our shock! We learned a lesson--Never plant them next to a fence!

Sunflower seeds are a healthy snack, they are fun to eat even though they are messy, and they taste good, especially when they are roasted and salted.

Pick a sunny spot away from your fence where you can plant your flowers. Remember that they will grow tall so make sure they have lots of room to shoot up. Not all sunflowers grow tall. We have dwarf varieties.

Once the chance of frost has gone in your area, plant them 1/2 inch deep outside, every 3 inches. Thin out the plants, allowing one to three feet between each one so they have plenty of room to grow. Most varieties grow pretty tall, up to six or seven feet. They take between 90 and 110 days to mature.

Once the Mammoth Grey Stripe flowers start dying, slip some panty hose over each flower to keep the birds and squirrels from eating the seeds. Let the seeds dry until they are hard on the sunflower or cut off the heads of the flowers and hang them up indoors to dry in a warm dry place with lots of airflow. Some of the seeds will fall off. Rub the flower on some wire mesh to get the rest of them off, allowing them to fall into a bowl or bucket.

Roast them for about 45 minutes in a 275 degree Fahrenheit oven. Salt the seeds, crack the shells open with your teeth and eat the inner portion of the seed, not the shell.

Growing sunflowers really attract the birds and squirrels to your yard so be prepared.

Our sunflowers did not come out quite as we had hoped.

Below are some pictures of what we were able to grow this year for the 2011 season.

Ring of Fire Sunflowers do not grow very tall.Ring of Fire Sunflowers do not grow very tall.
A closeup of Ring of Fire sunflowers.A closeup of Ring of Fire sunflowers.

Grow Sunflowers To Eat


Growing harvesting sunflowers is easy to do. The sun does all the work all we have to do is enjoy them as they grow.

Once harvested we will complete the process from drying to cooking to eating.

Germination: 7-10 days at 70-75°F.

Culture: Indoors - 6-8 weeks before last frost. Light aids in germination. Transplant out after danger of frost is past.

Outdoors - after last frost, only where summers are long. Growing on: 60°F night, 65-70°F day. Light/Soil: Full sun; average, well-drained soil.

Spacing: 10 to 12 inches. May require support.

Use: Cut or dried flower, filler, borders, back of beds.

Harvest: Fresh or dried - cut when 2 to 3 layers of petals have unfolded but before flowers fully open.

Below is a picture of the Sunflower I am growing for harvesting.

This is a Mammoth Grey Stripe Sunflower and they grow big. The seeds are the kind you eat after you roast and salt them.This is a Mammoth Grey Stripe Sunflower and they grow big. The seeds are the kind you eat after you roast and salt them.
This is the side of our home in San Antonio and this Mammoth Grey Stripe is going up to the second story.This sunflower plant has gotten so tall I had to stake this plant to keep it from falling over. The plant is now past the top of the stake on its way up to the second story.

I am growing giant sunflowers. They will have large heavy heads full of sunflower seeds. When one sees the number of seeds in a head, then one can begin to understand how they propagate so easily.

I have been plagued with some growing problems because I did not plant them where they could get full sunlight or I planted them to close to something else.

In the picture below is one of my sunflowers that is almost ready to be harvested.

Some sunflowers grow huge.Some sunflowers grow huge.

For cut flowers, succession planting of single-stem varieties at 10-14 day intervals and planting a number of different varieties that bloom at different times will extend your sunflower harvest.

Branching sunflowers provide a larger harvest at once and are also available with a range of days to maturity.

Both types are available in a wide range of petal colors from deep burgundy to pale cream with center disks from ebony to light green, in single of double flowers.

Velvet Queen Sunflower is so pretty.Velvet Queen Sunflower is so pretty.

Grow Sunflowers - Calories

Sunflower seeds are the gift of the beautiful sunflower that has rays of petals emanating from its bright yellow, seed-studded center. The flower produces grayish-green or black seeds encased in tear-dropped shaped gray or black shells that oftentimes feature black and white stripes. Since these seeds have a very high oil content, they are one of the main sources of polyunsaturated oil.

Sunflower seeds are an excellent source of vitamin E. They are also a very good source of vitamin B1. In addition, sunflower seeds are a good source of manganese, magnesium, copper, selenium, phosphorus, vitamin B5 and folate.

Sunflower seeds are an excellent source of vitamin E, the body's primary fat-soluble antioxidant.

Vitamin E travels throughout the body neutralizing free radicals that would otherwise damage fat-containing structures and molecules, such as cell membranes, brain cells, and cholesterol.

By protecting these cellular and molecular components, vitamin E has significant anti-inflammatory effects that result in the reduction of symptoms in asthma, osteoarthritis, and rheumatoid arthritis, conditions where free radicals and inflammation play a big role.

Vitamin E has also been shown to reduce the risk of colon cancer, help decrease the severity and frequency of hot flashes in women going through menopause, and help reduce the development of diabetic complications.

In addition, vitamin E plays an important role in the prevention of cardiovascular disease. Vitamin E is one of the main antioxidants found in cholesterol particles and helps prevent free radicals from oxidizing cholesterol.

Only after it has been oxidized is cholesterol able to adhere to blood vessel walls and initiate the process of atherosclerosis, which can lead to blocked arteries, heart attack, or stroke.

Getting plenty of vitamin E can significantly reduce the risk of developing atherosclerosis. In fact, studies show that people who get a good amount of vitamin E are at a much lower risk of dying of a heart attack than people whose dietary intake of vitamin E is marginal or inadequate. Just a quarter-cup of sunflower seeds contains 90.5% of the daily value for   vitamin E. 

One cup of sunflower seeds, dehulled, contains about 800 calories.

Grow Sunflowers - Start Indoors


This page provides written and visual instructions on Sunflower Parts. The variety we will be using for the spring growing season is the Autumn Beauty.

The Autumn Beauty is reminiscent of fall leaves. It has bold, beautiful flowers that can grow up to eight inches across. The colors are bright yellow, bronze and purple shades with some bi-colors.

The Autumn Beauty is mulch-branching with many long stems that can grow up to sixty inches tall which make it a perfect example to grow for our page on sunflower parts.

These will bloom in about ninety to one hundred ten days.

The Autumn Beauty is easy to grow and great for fresh cut flower displays.

The seeds of the Autumn Beauty will germinate in about seven to fourteen days with stable temperatures of 70-75º.

Plant one seed every six inches, thinning to twelve inches. The thinned plant, if dug up delicately, can be transplanted.

When growing inside, I like using a heat pad along with a grow light . You do not have to have these items but I find it helps me get my plants off to a good, strong start while producing strong root systems that will allow the plants to adjust to the outdoors.

Time the indoor plants so that they grown no longer than four weeks in the house. While in the house they will need full light.

When it is time to transplant the seedlings out, you will need to follow some sort of Hardening Off Procedure.

When transplanting out, dig your hole about four inches wide by four inches deep. Using a transplant solution like Neptune's Harvest Fish Fertilizer will help with transplant shock. You can also spray it on the plants while they are growing in the house to help them grow.

When transplanting them out space the sunflower seedlings about twelve inches apart. Keep them moist. As they grow they will need more water and some sort of fertilizer or compost with a high nitrogen content.

I have recently began using Bat Guano. It is 100% natural, has no smell in the garden and has the highest percentage of Nitrogen of any of the organic fertilizers.

The Autumn Beauty can be cut for displays, dried for crafts or planted at the back of beds or as a screen.

When do I start my seeds to grow sunflowers?

First of all you need to figure out what your last frost free date is--when the last date a freeze is expected in your area.

My father and his parents always said it was safe to plant after Easter. Over the years, I have noticed that this works well for the South Texas area.

Grow Sunflowers - More Sunflower Pages

Cook A Sunflower

Doomsday Sunflower Seeds

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