Return to the Iris Forum | Post a Follow-Up

 o
Mulch?

Posted by westy1941 z5 NO IL (cdwestg@att.net) on
Wed, Sep 30, 09 at 4:28

I know the rhizomes need their tops exposed slightly when planted; however, they are now in a mixed bed of hosta and a few other plants which I would like to mulch shallowly (an inch) or put compost on. Is it okay to cover them with mulch for winter and then remove it in the spring or must they be free of anything all winter (except snow!)...

Thanks in advance,
Westy


Follow-Up Postings:

 o
RE: Mulch?

If you cover your iris with mulch for winter they will rot.


 o
RE: Mulch?

So only snow should be on them then? I want to put down some home-made compost in my beds but I guess you're saying I should sweep it off the iris rhizomes or just keep it away from that area entirely? Is compost as bad as mulch for iris? I have the rhizomes in clusters so that they can sort of be 'off by themselves'. I don't ever want to go through another borer infestation like I did this summer!

Westy


 o
RE: Mulch?

Do not mulch OVER the rhizomes. I've had great success mulching AROUND the rhizomes, as I also have Iris in mixed beds. They also perform much better and grow bigger than my Iris that are not in mulch. I have not tried any other type of mulch other than red bark cedar, so I'm not sure how compost will affect it. Borers are just something you have to be prepared for. They're never going to go away and you will always have a few.

Carlos


 o
RE: Mulch?

Mulch and compost both are moisture retentive --- a no-no on top of rhizomes.

Protection against borers in only possible with, egads, chemicals. There are lots of old threads on borers - a search will find them. I'm so glad I don't have to do a search and squeeze.


 o
RE: Mulch?

Thanks again to all of you. I am going to do a search on Iris borers right now...no clue why I didn't think of that before. I know about Merit (must be a chemical) that you're supposed to apply in early spring or spring sometime. And I guess I'll be mulching/composting close to - but not ON TOP OF the Iris!

Westy


 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 Iris 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.
  • 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