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Growing Asparagus

Jan F M A M J J A S O N Dec
    S   T              

(Best months for growing Asparagus in USA - Zone 5a regions)

S = Plant undercover in seed trays T = Plant out (transplant) seedlings

  • Easy to grow. Plant as crowns. Best planted at soil temperatures between 61°F and 86°F. (Show °C/cm)
  • Space plants: 8 - 16 inches apart
  • Harvest in 2-3 years. Plant 'crowns' to harvest earlier .
  • Compatible with (can grow beside): Parsley, Basil, Nasturtiums, Lettuce
  • Avoid growing close to: Garlic, Onions, and root vegetables

Your comments and tips

17 Aug 17, Ian D (Australia - temperate climate)
I have transplanted asparagus crowns that were well established approx 3 weeks ago. They are now sending up spears and we had our first feed from the new crop last night. Should I be letting the spears grow out instead?
18 Aug 17, Mike (Australia - sub-tropical climate)
Should be able to eat them.
05 Aug 17, Jo Logan (New Zealand - temperate climate)
On asparagus - I've just purchased one year old crowns (7 in total). What kind of crop could I expect next year? How many spears does each crown produce?
08 Aug 17, Mike (Australia - sub-tropical climate)
I have read so many different things about what to expect. I planted 12 mth old crowns and last year I picked for about 4-5 weeks from 3 plants - I feel I could have picked them for 3 mths. I had massive ferns early this year. I picked about 70-80 spears last year in the 4-5 weeks. You probably have colder weather.
05 Aug 17, Bob reddin (New Zealand - cool/mountain climate)
When and how to transplant, is puttting down canning salt good idea
28 Jul 17, Tony (Australia - temperate climate)
Hi mike as I explained on my last post about transplanting crowns into a new bed, at this stage the once I transplanted are still dormant which I expected it will take I think for next year to get a some spears.The other crowns that we have in the same bed are sprouting through and looking good .By the way I thought asparagus shoot through in spring .Anyway I put lots of horse manure on all of them however I think cow is better .What do you Think? Tony
31 Jul 17, (Australia - tropical climate)
The transplanted ones will depend on how they were treated last year - whether they were left to build up energy reserves for this year. If you had plenty of spears grow into ferns then they should produce this year. Probably also depends how old the old crowns are. Last year while I was growing mine from 12 mth crowns to 24 mths I use to put about half a cup of fert in 9 L of water and feed them each month - only had 3 crowns. I also put manure/compost on in august. I have crowns that are coming up to 3 years old - that is from when seeds were planted - they have been shooting spears for a few weeks now - I have cut them back and manured and watered them. My seedlings which will be 12 mths old in Sept - I have not cut them back yet or put manure on them yet - will probably do that in about two weeks time. I have not watered them for the last month - they are not growing at the moment. As for manure - chicken is the richest in N followed by cow and then horse manure. I read the other day horse is about 1.75% N. Whatever manure you can get and add some fert if you like. We have had only one week of cool weather so far this winter - that is night temps down to 6-8 degrees.
13 Jul 17, Mike (Australia - sub-tropical climate)
I trimmed my asparagus bushes about three weeks ago andI put about 2-3" of compost on them. Ten days ago I put 2-3" of horse manure and another 2" of compost on. In the last week I have had approx. 20 spears from 3 plants.
01 Jul 17, Michael (USA - Zone 5a climate)
Is asparagus perennial or annual
06 Jul 17, John (Australia - temperate climate)
Asparagus is perennial and will bear for around 20 years.
Showing 11 - 20 of 253 comments

The crowns will start shooting August -Sept. Very little time to grow something. Depending on where you live - you would plant crowns Aug -Sept and put a good cover of compost / manure on top. This supplies the crown with nutrients for growing - you wouldn't want other plants use the nutrients up.

- Mike

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This planting guide is a general reference intended for home gardeners. We recommend that you take into account your local conditions in making planting decisions. Gardenate is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. The information on this site is presented in good faith, but we take no responsibility as to the accuracy of the information provided.
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