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Sunflower, Pike's Peak

Short Description

The largest sunflower seeds ever. Plants tower up to 15 ft. tall.

Full Description

The sunflower that sunflowers look up to, with the largest sunflower seeds in the world. Ginormous seed heads house seeds as large as 1 1/2'' long, the biggest we've ever seen. Extra-large seeds mean extra-large plants, and these grow 12-15' with luminous 14'' golden-yellow flowerheads.
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Product properties

Type Some flowers and vegetables fall into subcategories that may define how they grow (such as pole or bush), what they are used for (such as slicing tomatoes or shelling peas), flower type, or other designations that will help you select the type of a class of plant that you are looking for.


Sun The amount of sunlight this product needs daily in order to perform well in the garden. Full sun means 6 hours of direct sun per day; partial sun means 2-4 hours of direct sun per day; shade means little or no direct sun.

Full Sun

Height The typical height of this product at maturity.

144-180 inches

Spread The width of the plant at maturity.

26-30 inches

Ornamental Use Ways in which the product may be used in the garden for ornamental effect.

Beds, Borders, Cut Flowers

Life Cycle This refers to whether a plant is an annual, biennial or perennial. Annuals complete their life cycles in one year; biennials produce foliage the first year and bloom and go to seed the second year; perennials can live for more than two years.


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Growing Sunflowers
Growing Sunflowers
See how easy it is to grow these summertime favorites.
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  • Sunflowers

    Start Indoors Start Indoors Starting seeds indoors is called Indoor Sow or Indirect Sow and these dates are when to sow seeds indoors in the spring or summer
    Transplant Transplant When to transplant bulbs or roots in the garden for spring
    Start Outdoors Start Outdoors Starting seeds outdoors is called Outdoor Sow or Direct Sow and these dates are when to sow seeds outdoors in the spring or summer
    Start Indoors Fall Start Indoors Fall Starting seeds indoors in the fall called Indoor Sow or Indirect Sow and these dates are when to sow seeds outdoors in the fall
    Transplant Fall Transplant Fall Transplant Fall-When to transplant bulbs or roots in the garden for fall
    Start Outdoors Fall Start Outdoors Fall Starting seeds outdoors in the fall is called Outdoor Sow or Direct Sow and these dates are when to sow seeds outdoors in the fall
    S S Succession Planting This means that the plants have multiple harvests in a season
    First Date: May-09 - Last Date: Jun-23

Sunflowers are grown from seed sown directly in the garden after frost.

  • Direct sow seeds in average soil in full sun after all danger of frost.
  • When choosing a site consider that sunflowers need a well-drained soil.  They face the sun, so make sure they are in an open area of the garden. The taller varieties will cast shadows on other plants, so plant these at the north end of your garden.
  • Prepare the soil by removing weeds and working organic matter into the top 6-8 inches of soil; then level and smooth.
  • Most plants respond well to soils amended with organic matter. Compost is a wonderful form of organic matter with a good balance of nutrients and an ideal pH level, it can be added to your planting area at any time. If compost is not available, top dress the soil after planting with 1-2 inches of organic mulch, which will begin to breakdown into compost. After the growing season, a soil test will indicate what soil amendments are needed for the following season.
  • Sow seeds ½ inch deep in groups of 2 or 3 seeds. Space the groups 18-24 inches apart, depending on the variety.
  • Firm soil lightly, water and keep evenly moist.
  • Seedlings will emerge in 7-10 days.
  • Thin to one plant per group when seedlings have two sets of leaves.
  • Keep weeds under control during the growing season. Weeds compete with plants for water, space and nutrients, so control them by either cultivating often or use a mulch to prevent their seeds from germinating. 
  • Mulches also help retain soil moisture and maintain even soil temperatures. For annuals an organic mulch of shredded leaves lends a natural look to the bed and will improve the soil as it breaks down in time. Always keep mulches off a plant’s stems to prevent possible rot.
  • Keep soil evenly moist but not wet.
  • Once established sunflowers can tolerate drought.
  • No fertilizer is needed unless the soil is poor. Do not over fertilize.
  • Monitor for pests and diseases. Check with your local Cooperative Extension Service for pest controls recommended for your area.
  • Some varieties only produce one bloom so once the bloom is spent, the plant may be removed.
  • Remove plants after they are killed by frost in fall to avoid disease issues the following year.
  • Edible sunflowers will mature in about 3 months or more after sowing. To harvest the seeds, cut the heads off after the stalks are quite dry but before fall or winter rains come. Check the flower heads for maturity to see if the florets in the center of the flower disk have shriveled and the back of the flower head is turning yellow, or the head is starting to droop. Cut flower-heads with a foot of the stalk attached. Hang heads in a warm, dry, well-ventilated place so the seeds may fully ripen and dry. Cheesecloth, netting or a paper bag with holes punched in for ventilation should be placed over the head to protect the seeds and to collect those that may drop from drying.
  • Shorter varieties may be grown in containers. Be sure to use a commercial potting mix.
  • Pollenless varieties make terrific cut flowers.
Full Sun
144-180 inches
26-30 inches
Ornamental Use
Beds, Borders, Cut Flowers
Life Cycle
Sow Method
Direct Sow
Bloom Duration
6 weeks
Flower color
Gold, Orange, Yellow
Sunflower, Pike's Peak is rated 4.2 out of 5 by 6.
Rated 4 out of 5 by from Great in Las Vegas!! I tried Pikes Peak in Las Vegas last year and was not disappointed. They grew to be at least 10 ft tall but each plant had small multiple flowers (avg of 4 each). I have never seen this before but it was cool!!
Date published: 2018-03-17
Rated 4 out of 5 by from Huge, but resultant seeds are not good for eating I grew this in North Dakota and got awesome 12' tall plants! That was great, but I also wanted to harvest the big, beautiful seeds for eating. Unfortunately, all of the seeds were empty shells with no meat (yes, I waited until they were ripe). Maybe some sunflower hybrids are sterile
Date published: 2017-09-25
Rated 3 out of 5 by from Did not live up to the advertisement Planted in a raised bed with good soil and nutrients. It has achieved a hieght of 5ft and a bloom of 7in. Disappointed. We were hoping for better seed than what I can get at the supermarket.
Date published: 2017-05-29
Rated 5 out of 5 by from A neighborhood favorite The sun flowers are loved by all Had one get to full height and others were very tall as well Looking forward to planting more next year
Date published: 2016-09-15
Rated 4 out of 5 by from More to come later! 100% germination rate! I think I have three of these! It is a little deceptive how Burpee says LARGEST SEEDS, because I thought that met largest plant, that this was the tallest variety. However, I planted these almost exactly a month ago. We planted four seeds, and ALL germinated! One of the four was later eaten by bugs, right before I put sluggo all over the garden, speaking of that, I found a snail this morning so it's time for more sluggo. These are growing fairly quick in literally DEAD soil. This soil is the worst imaginable, but I have put some plant food in it. These ARE NOT DROUGHT TOLERANT! You must water! No annual is drought tolerant, mine wilt by noon if I haven't watered. They're only about a foot tall, but they are growing quite quick since they were seeds a month ago.
Date published: 2013-06-24
Rated 5 out of 5 by from Outstanding Height and Heat Resistance Colossal plants grow 15 feet in height. Pike’s Peak will produce a large disk with seeds that are a whopping 2 inches long. This variety was bred and selected in Africa and is superb in poor soil with less water. The outstanding heat resistance helps this variety to add an extra couple of feet in height in the middle of the summer when all of the other tall sunflowers have stopped.
Date published: 2011-11-30
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