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 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

20 Sep 10, Natalie (USA - Zone 8b climate)
Love to roast them in the oven, lightly tossed with olive oil and sprinkled with coarse salt and freshly ground black pepper.
09 Oct 11, Ali Mofazali (USA - Zone 8b climate)
What is the best way to grow asparagus in Georgia USA?
15 Jan 14, Debbie Schwitzer (USA - Zone 7a climate)
I planted 3 yr old crowns that I bought online ( have done this in two homes in same county) and they have come up sparsely every year. They have spread slightly and most of the spears have gotten smaller in diameter. I believe I did not pick the best site for them so I am digging them up this month and replanting them next month in better area. Since they do grow consistently every year with little to no care where they are, I figure a better site would have them producing at least enough for one meal for 2 people!
01 May 13, Sue (USA - Zone 5a climate)
Hi. Just wondering if my asparagus from last year shouldn't be up (visible) by now... It grew successfully last year from seed, (had 2 foot ferns) and even one or two edible stalks..(First year) Expected them to be great this season, but...I'm worried as there is no sign of them... Hope they didn't die... How can I check? I'm in zone 5. Nova Scotia. Its been a cold spring up until this week. Do you think they are dead?
04 Jun 19, Lucy (USA - Zone 4a climate)
My asparagus came up a few weeks ago. I was told that you shouldn’t eat asparagus until the 3rd season. Then only cut off the ones that are thicker and cut it close to the ground.
04 Jun 13, Ann Rein (USA - Zone 6a climate)
Have them come up yet? I remember mine were slow the second season. They're on year six or so now and I've been harvesting for a month now.
01 Feb 16, Betty (Canada - Zone 2b Sub-Arctic climate)
Where can I purchase seeds or crowns for Martha Washington asparagus?
23 Feb 16, dave gasche (USA - Zone 5b climate)
betty, I THINK THIS IS A COMMON VARIETY. IT IS COMMONLY SOLD IN WICHITA KS AT WAL-MART,K MART HOME DEPOT LOWES. THEY HAVE BOTH SEED AND CROWNS--I THINK THE CROWNS COST ABOUT $4 FOR A BAG OF 8. SEEDS ARE MUCH CHEAPER BUT WILL REQUIRE AN EXTRA YEAR.
19 Apr 16, angela bradshaw (USA - Zone 10b climate)
is there any variety of asparagus that will grow in USA zone 10B?
22 Apr 17, Joy (New Zealand - cool/mountain climate)
Can you tell the difference between male and female asparagus, and what is the difference?
Showing 1 - 10 of 87 comments

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