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Growing Asparagus

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

(Best months for growing Asparagus in New Zealand - cool/mountain regions)

P = Plant crowns

  • 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) 20-40cm 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 1-2cm/half-inch in diameter. Leave the rest to grow into the leafy ferns (1.5m/5-6ft 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

04 Jul 19, mark (Australia - temperate climate)
i live in a frost prone area reg minus 1or 2 deg c i planted asparagus seedlings 2 year ago and 2 year old crowns about a month ago i mulched with a good layer of suger cane mulch it is early july and the shoots on my older plants are emerging we had another frost today , my questing is should i just leave them or should i trim them of to prevent frost damage to the plant
05 Jul 19, (Australia - temperate climate)
I would suggest you read the article here until you understand it.
02 Jul 19, Lee (New Zealand - cool/mountain climate)
I am about to plant a raised garden bed with Asparagus, I have done the research but am confused with the depth that the crowns should be planted. Would any of those that have had success give me a little advice. Thanks in advance - Lee
03 Jul 19, (New Zealand - temperate climate)
Plant a few inches deep (3-4
04 Jul 19, (New Zealand - temperate climate)
3-4
30 Jun 19, Susan Bruce (New Zealand - temperate climate)
Is it helpful to put sea weed on asparagus plants as manure?
03 Jul 19, (Australia - sub-tropical climate)
Any organic matter needs to decompose to be able to be used by plants. Sea weed is great but it needs to break down first. Compost it now so to have it ready by end of August.
25 Jun 19, dennis leavesley (Australia - temperate climate)
what Fert. do you use on your asparagus
26 Jun 19, (Australia - sub-tropical climate)
Try using composed manure or compost. Any general fert would do. The ferns that have grown the last 6-8 months have put a lot of energy into the crown to supply nutrients for the coming crop.
21 Jun 19, Mike Miller (USA - Zone 9b climate)
can i plant asparagus crowns in June in zone 9 southern california
Showing 1 - 10 of 353 comments

Cut the ferns in late August and put compost or composted manure on it. Stop watering them now.

- Green thumb

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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. GardenGrow 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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