Growing Asparagus

Aspargus officianalis : Asparagaceae / the asparagus family

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

(Best months for growing Asparagus in Canada - Zone 4b Temperate Warm Summer regions)

  • S = Plant undercover in seed trays
  • Easy to grow. Plant as crowns. Best planted at soil temperatures between 16°C and 30°C. (Show °F/in)
  • Space plants: 20 - 40 cm 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
  • Asparagus growing
  • Baby Asparagus Seedlings (approx 6cm/3in) ((c) Liz Hutchinson)

Plant crowns (roots) 20 - 40 cm apart and a few cm (1 inch) deep in well manured soil. The asparagus shoots grow in spring. Harvest the shoots which are bigger than 1 - 2 cm/half-inch in diameter. Leave the rest to grow into the leafy ferns (1.5 m/5 - 6 ft tall) which will feed the crowns to give a crop next year. In autumn the ferns will be covered in bright red poisonous berries.

Leave the ferns to die down in autumn, then trim off the dead stalks and pile on plenty of rotted manure/compost to give the roots plenty of food to produce new stems in spring.

Harvest by cutting off the stalk, close to the ground. From the third year you can get an additional crop by letting the first lot of ferns grow, then bending down the stalks to break them. A second crop of shoots will grow and can be harvested. Leave subsequent shoots to grow on to ferns. Asparagus does not like continuously wet and warm soil. It grows better where there is a cool or frosty season.

Culinary hints - cooking and eating Asparagus

Steaming is traditional, then coating with melted butter or hollandaise sauce.
Alternatively break in short lengths, and cook quickly in hot oil in a wok and sprinkle with soy sauce or balsamic vinegar.

NOTE: The asparagus berries are poisonous. Only the young shoots are edible.

Your comments and tips

03 Feb 20, ASHWANI BHATNAGAR (Canada - Zone 8a Mild Temperate climate)
Hi, I live in Vancouver, BC, Canada. I want to start growing Asparagus in my very small backyard to start with. I am looking for someone who can guide me. I am ready to pay consulting fees. Please advise. Best Regards, Ash
06 Feb 20, anonymous (Australia - arid climate)
Work out your climate zone from the blue tab above and then check to see if you can plant asparagus in the calendar table at the top.
01 May 20, Domhnal MacMathghamhna (Canada - zone 4a Temperate Warm Summer climate)
Asparagus can be notoriously difficult to harvest so I recommend going on the internet and asking your question, including your zone information.....you'll find countless sites that discuss growing this challenging vegetable.
26 Oct 20, Anonymous (Canada - Zone 6a Temperate Warm Summer climate)
Asparagus is simple to harvest. The shoot/spear comes out of the ground and when it is 6-12 inches high, cut it.
07 May 20, Anonymous (Canada - Zone 3a Temperate Short Summer climate)
You can absolutely grow asparagus in Vancouver. Start with a year old crown, make sure there is no grass or other weeds in the space to compete with it and plant it deep - usually the crown will come with directions, but approximately 8 inches deep. you will be able to harvest a bit in a couple years and loads within 5-10. This is what worked for me in Saskatchewan so you shouldn't have any issues.
11 Oct 20, Mike G (Canada - Zone 2b Sub-Arctic climate)
Hi I want to try growing asparagus I live at Wasaga Beach, Ontario Canada what is best method to produce healthy productive plants and our winters are very cold often hitting-40 degrees Celsius what is best method to winterize .
12 Oct 20, Mike G (Canada - Zone 6a Temperate Warm Summer climate)
Yikes, my error our climate is zone 6a. If someone could provide me with the Answers to the above questions I would be appreciative.
29 Oct 20, Anonymous (Australia - sub-tropical climate)
Check the planting time from the planting calendar in Asparagus page. Also google how to grow and harvest it.
15 May 23, (Canada - Zone 2b Sub-Arctic climate)
I have a single shoot growing from 2 plants that are 12–14in tall already in middle of May. Should I cut these down now?
19 May 23, (Canada - Zone 2b Sub-Arctic climate)
Let them grow for the first 2-3 years.
Showing 1 - 10 of 13 comments

I have a single shoot growing from 2 plants that are 12–14in tall already in middle of May. Should I cut these down now?

- Anonymous

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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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