Return to the Container Gardening Forum | Post a Follow-Up

 o
511 mix questions

Posted by w2p2k 9 (CA) (My Page) on
Thu, Mar 15, 12 at 18:17

Hi. In one of Al's posts, he describes the 511 mix:
http://forums2.gardenweb.com/forums/load/contain/msg0214580016564.html

One of the ingredients:
"garden lime (or gypsum in some cases)"

When do you use lime and when do you use gypsum? I read in someone else's post to avoid lime in citrus and berries.

Also, another ingredient is:
"sphagnum peat"

At Lyngs0 Garden, they have Ligna Peat. Is this an equivalent product?

Thanks!


Follow-Up Postings:

 o
RE: 511 mix questions

Lime and gypsum supply calcium. Since magnesium often occurs with limestone, it ends up in agricultural lime, further enriching soil. Sulfur sometimes occurs with gypsum, adding extra soil nutrition.

Read more: Gypsum Vs. Lime for Soil : eHow.com http://www.ehow.com/facts_5846214_gypsum-vs_-lime-soil.html#ixzz1pEs7Ai5J

Ligna peat is ground up redwood bark sometimes used as a substitute for peat.


 o
RE: 511 mix questions

Thanks lgteacher!


 o
RE: 511 mix questions

Hi w2,
Please also note that lime is used for the 5-1-1, not gypsum. Although both are calcium sources, only lime will adjust the inherantly low ph of the 5-1-1 to an acceptable level. Gypsum is utilize for composing the gritty mix.

Additionally, I don't know anything about Ligna Peat, however, if you are looking for an alternative to peat, simply use the portion of pine bark dust that passes through your 1/16" mesh (insect screen).

PJ


 o
RE: 511 mix questions

Use Gypsum and epsom salts in 5-1-1 instead of dolomitic lime only when you want the pH to stay low such as for acid loving plants such as rhododendrons, blueberries, azalea's etc. and plan to use fertilizers commonly low in Ca and Mg such as MG 24-8-16 and others.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Container Gardening Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here