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Thread: Asparagus Raised Beds

  1. #1
    Holly Daze is offline Germinator
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    Default Asparagus Raised Beds

    Hi all,

    I have built a raised asparagus bed. Do you think I should lay down weed suppressant before I fill it with soil/compost etc?
    Cheers

  2. #2
    bario1's Avatar
    bario1 is offline Work in progress...
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    No, I think that would be counter productive... asparagus have very deep roots, that's what enables them to be so vigorous in Spring. To reduce the need for weeding, use heavy mulches, these can also feed the plants.
    He-Pep!

  3. #3
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    Jay-ell is offline Welcome To The Jungle
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    How deep is the soil your adding going to be? I wouldn't advise putting weed suppressant at the bottom of beds. Believe me it will eventually provide a great wicking material for all the weeds that have attached their roots into it (I'm digging it out a bed at a time from my plots).

    If you're worried about any perennial roots being left after you dug them out (you did dig them out didn't you ) then some cardboard laid down so that the edges overlap should help stop any shoots pushing up yet break down to allow the asparagus roots to delve down.

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  4. #4
    plam's Avatar
    plam is offline Seedling
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    Another no vote from me - they need good drainage, although the membrane is permeable I'm sure it must keep some of the water in.

  5. #5
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    geepee is offline Rooter
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    Asparagus thrives in DEEP ,free drainage beds.
    my advice is to make sure you have this at planting .
    keep a vigilant eye on any weed growth and pull them out by the roots on site .
    Once you have a canopy of FERN ,Weeds should slow down.
    Cut ferns back to ground level once they start to die back inabout late autumn ,early winter.
    Apply at least 2'' of Mulch and,or FYM on top and sit back to await an explosion of new spears.

    Motto is ...they hate wet feet and weed infestation.
    Gp
    Gillykat likes this.
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  6. #6
    Holly Daze is offline Germinator
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    Hi and thank you all for your invaluable advice. The blocks used to build the bed are about 1 ft high and we have ordered a whole heap of topsoil, well rotted manure and some multipurpose compost. Have laid some gravel at the bottom. Will get crowns in spring. Can anyone recommend a reliable supplier of crowns - we plan to harvest in 3 years. Oh yes, any advice on varieties. I would like three different varieties- five of each. I am telling you. These are going to be the most costly asparagus ever! 😂

    H

  7. #7
    bario1's Avatar
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    I got mine from Pom@na Fruits, 12 each of Guelph Millenium and Mondeo. They both crop well now, one better than the other, but unfortunately i can't remember which is which

    One thing I will say about your plan is this - if you get just five crowns of each variety, and they crop at different times (early, mid, late), you may find that you never have enough spears ready at the same time for a really satisfying plate full.... also, how many of you are there? Could you fit more than 15 in your bed? How big is it?
    Gillykat likes this.
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  8. #8
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    Agree on no to weed fabric, as asparagus roots go very deep, 10 feets when older
    https://www.soilandhealth.org/wp-con...010137ch6.html
    If near a beach seaweed on top controls a lot of weeds
    Would add manure at the bottom. They dont like acid soil
    Found here Gijnlim grown from seed the cheapest method , no fusharium or other disease/insect risk but more work (25 seeds £8) they seem to tolerate wet winters better, which us northeners get, compared to some of the fancy varieties. With seeds I have got 95% survival, with crowns only 50% but that may be down to me being useless and wet winters. But depends if after yield or purple color etc. Also all male varieties are higher yielding as no energy spent on seed production

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