Growing Asparagus

Aspargus officianalis : Asparagaceae / the asparagus family

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
  • 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

15 Aug 24, Colin (Australia - sub-tropical climate)
Planted Mary Washington 6yrs ago (from Bunnings). Is a female plant. Producing thin stalks. Where in Australia can I buy a male asparagus plant. As far as I know, males are used for commercial crops. So far, even nurserymen can't help. Anyone?
03 Sep 24, (Australia - sub-tropical climate)
Bunnings sell asparagus this time of the year. I'm no expert but I don't think you can tell until the have grown for a year or so.
25 Aug 24, MIke (Australia - sub-tropical climate)
Try Bunnings - they usually sell this time of the year. Buy 3-6 crowns. One plant won't supply enough spears.
02 Aug 24, Janette Dunn (Australia - sub-tropical climate)
What is the best variety to grow in Katherine, NT? I have never grown asparagus before.
06 Aug 24, (Australia - tropical climate)
Whatever you can buy - green or purple.
19 Sep 23, Chris Veenstra (Australia - temperate climate)
Have been away and have come home and asparagus is already up, do I cut if and start again or just harvest what comes up?
20 Sep 23, Anonymous (Australia - sub-tropical climate)
You can cut all the shoots/fern off. Any that are just spears you can eat. Cut them off each day or two. Enjoy!!!!!
13 Jun 23, Janice (Australia - sub-tropical climate)
I planted a few asparagus plants in a small raised bed. The bed now looks very full. What do I do for over crowding?
01 Aug 23, Garlic Breath (Australia - temperate climate)
Try putting some in a seperate bed
16 Jun 23, (Australia - sub-tropical climate)
Thin out weaker plants and provide adequate spacing between the remaining ones. You can also transplant or divide the crowns.
Showing 1 - 10 of 336 comments

Evelyn I haven't tried the fat bastard variety but I have Mary Washington in at present. Grew these plants from seed and it has taken 5 years for my first really good crop although I could have picked after 3 years I didn't and the wait has been worthwhile.. The secret is to use plenty of manure- I have found sheep and cow manure is great and I dig in a few bags in early winter so it rots down well before spring. Also plenty of water in summer so the crowns don't get dry.

- warren

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