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

15 Feb 24, John spence (USA - Zone 7a climate)
When and how is the best time to plant asparagus seed in zone 7a
19 Feb 24, (USA - Zone 9a climate)
Best time to plant crowns is February and March or November and December
11 Jan 24, James Bushdid (USA - Zone 9b climate)
Growing instruction in zone 9B, Ormond Beach, Florida.
21 Jan 24, James Bushdid (USA - Zone 9b climate)
Trying to grow from seed Mary Washington Asparagus any help you can give an old retired man. Thank you. (Area, EAST COAST OF FLORIDA, ORMOND BEACH, FLORIDA.
14 Jan 24, (USA - Zone 7a climate)
Google how to grow it.
02 Jan 24, Claire (USA - Zone 9b climate)
We have asparagus in raised beds in zone 9b and they are doing great going into our third year Give it a go what is there to lose ?
12 Dec 23, Bongani Mhlabeni (South Africa - Summer rainfall climate)
I am the Procurement Officer in the Ministry of Agriculture Lesotho and like to Procure Asparagus Crowns. 350 x 10 Bundles of 2-year-old asparagus crowns to cover about 1.3 Ha. Cognizant of the scarcity of supply, any of the following varieties will be proffered: UC157, Purchase Passion, Pacific Purple and Marry Washington.
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?
Showing 1 - 10 of 552 comments

I just received 6 asparagus roots, with 4” growth on top. Can I plant them in my enclosed garden area or should I keep them near a window, indoors? It is still warm to hot, in my zone 9 area, of Southern California.

- Ginger

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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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