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Moonflower, Giant White

Short Description

HEIRLOOM. Fragrant 6" flowers open in the evening.

Full Description

These old fashioned flowers, as the name implies, open in the evening. As evening falls, you can actually watch them open. For added interest, mix them with morning bloomers such as morning glories. Grown as an annual but perennial in mild areas, they're easy to grow and grow best in full sun.
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Order: 1 Pkt. (50 seeds)
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Product properties

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.

15 feet

Spread The width of the plant at maturity.

8-10 feet

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

Trellis or Lattice

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.


Sow Method This refers to whether the seed should be sown early indoors and the seedlings transplanted outside later, or if the seed should be sown directly in the garden at the recommended planting time.

Direct Sow/Indoor Sow

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  • Moonflowers

    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
    First Date: May-09 - Last Date: May-16

How to Sow

Sowing Directly in the Garden:

  • Moonflower seed has a hard seed coat. To aid germination, nick or cut the seed coat with a nail file and soak the seed overnight.
  • Direct sow seeds in average soil in full sun two weeks after danger of frost has passed. Moonflower is a vigorous vine; choose a location next to a support for the vines to climb.
  • Moonflower is not generally recommended for containers.
  • Prepare the soil by removing weeds and working organic matter into the top 6-8 inches of soil; then level and smooth. Moonflower tends to prefer poor soils rather than highly enriched soil.
  • Sow seeds thinly and cover with 1/2 inch of soil.
  • Firm soil lightly and keep evenly moist.
  • Seedlings will emerge in 7-14 days.
  • Keep soil evenly moist but not wet.
  • Thin to stand 12 inches apart when plants are 1 to 2 inches high.
  • Do not fertilize unless the plants are showing a nutrient deficiently. Over fertilizing may produce lush green vines with few flowers.
  • Monitor for pests and diseases. Check with your local Cooperative Extension Service for pest controls recommended for your area.
  • Remove plants after they are killed by heavy frost in fall to avoid disease issues the following year.
  • Moonflower vines need little care and are easy to grow.
  • Plants can self-sow so allow some to set seeds at the end of the season if you would like it to come back next year. If you would like to prevent self-sowing, remove seed pods before the seeds are released.
  • When night falls flowers open quickly, sometimes in less than a minute. Excellent plant for a patio where you may enjoy the summer evening outdoors.
Full Sun
15 feet
8-10 feet
Ornamental Use
Trellis or Lattice
Life Cycle
Sow Method
Direct Sow/Indoor Sow
Bloom Duration
8 weeks
Flower color
Moonflower, Giant White is rated 3.9 out of 5 by 34.
Rated 5 out of 5 by from Super easy to grow and absolutely stunning! I planted the seeds for these in mid-to-late June and am starting to see the first blooms now at the end of August. Gorgeous white flowers and beautiful green leaves. Scratching and soaking the seeds definitely helped with germination, but other than that and normal garden watering, I did nothing but occasionally place a stray vine around part of the fence. Extremely happy.
Date published: 2019-08-31
Rated 5 out of 5 by from I soaked seeds overnight then terminated with wet paper towels. 80% sprouted. Transferred to seed starters, plopped in ground today..
Date published: 2018-04-23
Rated 5 out of 5 by from Great for kids and new gardeners! I had a lot of fun with this plant. It looked a little ugly when I first started it. Maybe it wasn’t getting enough sunlight or nutrient. Could have been a cabbage. Maybe some mold on the big old leaves before they opened up more but once I thinned and nurtured them they were a great little plant. I started from seed outdoors in a 24 inch window container. I think if I had kids, they’d be a fun introduction to gardening next to the Morning Glory but they were just as fun for adults (I think).
Date published: 2018-03-12
Rated 1 out of 5 by from Didn't make it Last year they did great but this year none of them came up. Not sure why but I will keep trying.
Date published: 2017-07-15
Rated 1 out of 5 by from Big disappointment! Planted when and how directed...waited patiently as they are so cool. STILL waiting and not one even sprouted. Did in large pots AND ground...NOTHING! Will try again next season? ( Have grown them here before.)
Date published: 2017-07-15
Rated 5 out of 5 by from Moon Flowers prolific season I bought several packs of Moon Flower seeds and started my four plants from seed inside. At the appropriate time, I planted the plants outside. I watched the vines grow for a couple months and then waited patiently for the pods holding the buds to appear. Since they have bloomed, there have been nights with up to 34 blooms among the four plants. It has been a wonderful addition to my patio.
Date published: 2016-09-23
Rated 5 out of 5 by from The smell of these are amazing on summer nights! I've bought burpee moonflower seeds for years. I always soak for 24 hrs before planting. I have found that if you want the best results to plant these in a large pot ( large root system ) with good fertile soil. or just good soil, and mulch. A good bloom boosting liquid fertilizer helps as well. These open in what seems like the blink of an eye and then you have these incredibly large, velvety soft flowers that have such an incredible fragrance to them.. Defiantly plant close to a patio or door so you can watch and smell these when they bloom!
Date published: 2016-09-17
Rated 5 out of 5 by from Lovely as always Every year my moonflowers are among my favorites - appearing in the evening, and late in the season, they are something very special in my gardening year.
Date published: 2016-09-15
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