Growing asparagus from seed- A cheaper alternative to buying expensive semi mature crowns.


If you have been following my Facebook posts lately you will know I have had a great crop of asparagus this year.

I have 12 mature plants cropping at the moment and I get about 2-3 spears from each plant twice a week. This gives my family several feeds of asparagus a week.

I harvest spears for about 6 weeks before letting them develop into full leaf and start feeding the crown for next year’s crop.

Half the plants I have, have been grown from purchased semi mature (2-3yrs old) crowns and the other half have been produced by seed. I wanted to trial the seeds to see how difficult it was to grow asparagus from seed, if they were as good as the purchased crowns and how quickly they produce good quality spears.

Why seed?

Crowns are reasonably expensive, depending on where you buy them, they can range from $7 to $12 per crown, though this is not an excessive price, when you consider how long they produce, if you want 12 or so plants it means an outlay of over $100.00 which can be a bit off putting.

Whereas a packet of seed can be as cheap as $2 or $3 and they usually contains around 20 seeds in each packet.

From my experience the seedling crowns are just as good as the mature crowns I have purchased.

There is a much greater range of asparagus that can be purchased as seeds, including some lovely heritage varieties.

So last spring when I wanted to increase the number of plants I have, rather than buy mature crowns, I sowed two packets of seed one of “Mary Washington” and one of a purple variety known as “Sweet purple”.

I would like to share with you how I did this so if you would like to start to grow asparagus or increase the number of asparagus plants you have, but are baulking at the cost of mature plant, this is a very cheap alternative.

Be aware that it will take more time, usually around 2 to 3 years, to harvest decent sized spears.

So what to do:

  • ¾ fill a 10cm pot with good quality potting mix and top it with 5cm of seed raising mix.
  • Sprinkled the asparagus seeds over the top and covered with a further 1-2cms of seed raising mix
  • Firm down to get good seed to soil contact and water well.
  • Pop them in a shelter spot in high light and keep the soil moist.
  • Protected from snails and birds
  • Once the seedlings are about 10- 12 cms high, plant them into a well prepared garden bed.
  • Try not to disturb the root too much.

Asparagus seedlings

It is difficult to continue growing the young asparagus in a pot as it is hard to keep the moisture and nutrients up to them as they grow so quickly.

In the ground they will power away and produce good strong plants and start to develop small crowns.

The following winter, when the plants have become dormant:

Dormant Asparagus seedlings

















  • Dig them up and divide then into individual plants

Dividing Asparagus seddlings

  • Discarded any that were too small or damaged in the dividing process
  • Replanted them at 30 cm intervals into a well prepared garden bed.

All the seedling I planted last winter have taken and I now have 20 young crowns growing.

Young Asparagus seedling

The spears are very thin so I will not pick anything from these crowns for another 2 to 3 years by which time the crowns will be producing strong spears.

So effectively from 2 packets of seeds, at a cost of $7, I have produced the equivalent of around $200 worth of crowns – all it took was a little effort and time.

So if you baulk at paying the price for mature asparagus crown or would like to try some different varieties of asparagus why not try growing your own from seed.

Learn more about how to grow asparagus here.
Learn more about how to cook and prepare asparagus here.

For more information on starting your productive backyard, check out the website.
If you have questions about your new garden and your plantings, you can always ask me questions via my Facebook PagePinterest or Instagram!

Happy Gardening Kathy

Posted on October 23, 2015 in HOW TO GROW, SPRING

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Responses (6)

  1. rabidlittlehippy
    October 24, 2015 at 3:16 am · Reply

    The first asparagus I ever grew was from seed, but seed I collected from a friends asparagus ferns. Warning, the seeds are poisonous so you do need to be careful but the seed I collected took very well and I had I reckon 95% strike rate. Some of the seedlings didn’t transfer well but I have some looking ready to harvest next year (year 3). I also bought a stack on sale last winter which are ferning out now but I should be realising quite a good first harvest next year I hope.:)

  2. fergie51
    October 26, 2015 at 6:38 am · Reply

    Good info but isn’t there an issue with female/male plants being preferred? How do you manage that? Cheers 🙂

    • kmfinigan
      June 30, 2016 at 10:41 pm · Reply

      Sorry for the late response – on Holidays at the moment and trying to catch up. Male plants are preferred as they will continue to produce for longer as they are not wanting to produce seed but the female will still give you a crop. But cut regularly for as soon as you let a stem develop leaves all their energy goes into flowers and seed not into more stems. Thanks Kathy

  3. Carmel Bergin
    May 24, 2016 at 4:36 pm · Reply

    MPBY – when planting out the 10-12cm high asparagus seedlings how much root should they have? At present mine have a single white root.

    • kmfinigan
      June 1, 2016 at 3:26 am · Reply

      That will be fine they take a few years to develop an extensive root system Just be very gentle when planting and applying several application of seasol to promote root development

  4. Jan
    July 10, 2021 at 9:14 pm · Reply

    I grew asparagus from seed at the first house we had – honestly my three year old crowns were the size of a basketball. I dug some up for a friend, as we wanted the space and the bed produced more than we could eat/give away. You buy a two or three year old crown at the shops and it’s not even as big as your fist; a puling weakling. At home seed grown every time. And chop up some kelp and throw it on the top of the beds if you can.
    In hindsight I should have sold my excess to the local restaurants, lol.
    This garden I’ve done the same and they’re huge again. It’s the best value/work ratio in a vegetable that you can have to be honest, along with rhubarb. Happy Gardening to All!

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