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Vegetable Seeds per Ounce / per Gram

Celery seed
Celery seed

Vegetable seed for home gardens is often sold by weight–by the ounce or by the gram or by fractions of ounces and grams.

Some seed sellers sell by the piece–1 seed per penny, for example. But seeds sold in packets–especially those sold in stores–commonly list the weight, but not the number of seeds.

When buying seed by weight, keep in mind:

• The weight of a number of seeds for a specific vegetable crop can vary by variety or cultivar.

• One ounce equals 28 grams.

Estimated number of vegetable seeds by ounce or gram:

Here are estimates of the number of seeds in an ounce or gram by crop. These estimates are based on a survey of several seed sellers. (These are estimates. To be certain the number of seed in a seed packet sold by weight, count the seed.)

 

Vegetable Seeds per Ounce Seeds per Gram
Artichoke 200 7-8
Arugula 14,200 500
Asparagus 680-1400 24-50
Basil 1700-18,400 600-650
Bean, Broad 25-30 1
Bean, Bush 50-280 2-10
Bean, Pole 25-30 1
Beets 1134-1700 40-60
Broccoli 9000 315
Brussels Sprouts 7600 270
Cabbage, Chinese 11,350-34,000 400-750
Cabbage 2800-10,300 190-300
Carrot 11,300-34,000 400-1200
Cauliflower 7100-9900 250-350
Celery 56,700-70,900 2000-2500
Chard 1100-3700 40-130
Chicory 5700-25,500 600-900
Chives, Onion 5700-7000 200-250
Chives, Garlic 7000 250
Coriander 2000-2500 70-90
Corn 225-290 8-10
Corn Salad 1980-18,350 700-1000
Cowpea 205 7
Cucumber 850-1200 30-45
Dill 25,000 900
Eggplant 5700-7100 200-250
Endive 25,500 900
Fennel 8500 300
Gourd 850 30
Jicama 140 5
Kale 7100-8500 250-300
Kohlrabi 7100 250
Leek 9500-11,200 340-400
Lettuce 17,000-34,000 600-1200
Marjoram 340,200 12,000
Mitsuba 14,200 500
Mizuna 8500-11,400 300-400
Mustard 9900-17,000 350-600
Nasturium 200 7-8
Okra 425-700 15-25
Onion 7000-11,300 250-400
Oregano 24,500  
Parsley 1400-1700 500-600
Parsnip 4000-5700 140-200
Pea 90-175 4-5
Pepper 4200-5700 150-200
Pumpkin 100-300 8-15
Radish 2500-4000 90-140
Rhubarb 1700-2300 60-80
Rosemary 25,500 900
Sage 7100 250
Spinach 2000-2300 70-80
Squash 200-425 7-15
Sunflower 280-570 10-20
Thyme 17,000 6000
Tomato 7000-11,500 250-380
Turnip 8500-12,800 300-450
Watermelon 170-560 6-20
Zucchini 55-280 2-10

 

 

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42 Comments

  1. Thank you for compiling this information. I’m working on a seed order for the farm I’m volunteering on. We did the seed inventory by weighing the seeds. I know weights vary from cultivar to cultivar, but I was just looking for a rough estimate. This page is perfect for what I need.

  2. Hi ! Excellent info !!!
    Do you also happen to have some (average) data on germination rates for different seeds ?
    Living in the middle-of-nowhere, in a jungle in Laos…all seeds has to be imported, so that data would be really helpful.
    Thanks and Cheers, Chris

    • Seed germination is affected by many factors, the most notable are (1) correct depth of sowing, (2) sufficient moisture to allow the seed cover to break or crack, (3) soil temperature, optimal about 70F, (4) sufficient light, and (5) age of the seed–most seeds are viable for at least 3 years. You can get an average germination rate for most seed, by giving them the right growing conditions–as outline above–then planting 10 seeds and noting when and how many germinate.

      • Hi ! Thanks for a quick answer.
        I agree to all info in your answer. I was however hoping for some “ready-made” data, if someone had already done a compilation.
        Keep up the Good Work ! Cheers, Chris

        • You may also want to check the website of the seed company you are buying seed from. Sometimes–not often–the seed company will guarantee a percentage of a seed packets germination.

    • The answer to your question depends on the size of the trays–if they are trays with individual cells, sow 2 seeds per cell. The answer also depends on the variety of seed in the packet. A bean seed packet may contain 25 to 50 seeds depending upon the seed company; a radish seed packet may contain 50 to 100 seeds depending on the seed company. Check the seed company’s website; it may tell you how many seeds are in each packet.

  3. You just helped me complete my Undergraduate Practical File which was asking for Seed Weight which infact again requires Seed weight of 1000 seeds… So I back calculated the answer using your Seed weight chart and works perfect. Thank You so much for helping me out 🙂

    • Thanks! I wrote The Kitchen Garden Growers’ Guide for quick answers to questions that kept coming up season after season. There’s a lot to remember as a gardener; it’s nice to have quick answers in one place. Thanks again!

    • The question is: how to buy lombok seeds online?
      Answer: To purchase medicinal plants from Lombok Island (located in Indonesia) you would first need to specify the plant you wish to purchase and identify the botanical name for that plant. You could then do a online search using the botanical name.

  4. Hi,Thanks for this it will help me so much since i operate a plant clinic and I always encountered questions from farmers, asking me to give them an estimate of the seeds in 10 gram pack.
    This helps them to to know how much land it will cover.

  5. Thanks for the heads up.
    Just out of curiousity, I am buying a cherry tomato – Lilliput F1 and they sell in pack os 0.15 grams. How many seeds approximately will this translate to?

    • The seeds you will need will depend on how many of each plant you want to grow and whether you plan to plant plants in single rows or wide rows. Read the “How to Grow” articles at this site on each crop you want to grow; each article will give you recommended spacing.

  6. Happy to have the data, but I am very concerned about the cowpea value. Other sources, such as Purdue, give a value of 3000-4000 seeds/lb, which is about 250 per oz, not 1420. 50 cowpeas in a gram is not accurate. Do you mind providing your source for these data? I am applying for a grant, and I appreciate your format, but I would like to be able to reference your original source, unless you collected it yourself. Thank you!

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