UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13D

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (AMENDMENT NO. 5)*

                              Cano Petroleum, Inc.
               ---------------------------------------------------
                                (Name of Issuer)

                    Common Stock, par value $0.0001 per share
               ---------------------------------------------------
                         (Title of Class of Securities)

                                    137801106
               ---------------------------------------------------
                                 (CUSIP Number)

                              Steven J. Pully, Esq.
                              Carlson Capital, L.P.
                        2100 McKinney Avenue, Suite 1600
                                Dallas, TX 75201
                                 (214) 932-9600

                                 with a copy to

                                  Peter Halasz
                            Schulte Roth & Zabel LLP
                                919 Third Avenue
                            New York, New York 10022
                                 (212) 756-2000
               ---------------------------------------------------
           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)

                                  May 26, 2009
               ---------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report
the acquisition that is the subject of this Schedule 13D, and is filing this
schedule because of ss.ss.240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the
following box. [ ]

NOTE: Schedules filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits. See Rule 13d-7 for other parties
to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).






CUSIP NO.   137801106                 SCHEDULE 13D/A        PAGE 1 OF 8 PAGES

-----------------------------------------------------------------------------
    1   NAMES OF REPORTING PERSONS

        Double Black Diamond Offshore Ltd.
-----------------------------------------------------------------------------
    2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
        (a) [ ]
        (b) [ ]
-----------------------------------------------------------------------------
    3   SEC USE ONLY
-----------------------------------------------------------------------------
    4   SOURCE OF FUNDS (SEE INSTRUCTIONS)

        WC
-----------------------------------------------------------------------------
    5   CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
        TO ITEMS 2(d) OR 2(e)
        [ ]
-----------------------------------------------------------------------------
    6   CITIZENSHIP OR PLACE OF ORGANIZATION

        Cayman Islands
-----------------------------------------------------------------------------
                    7    SOLE VOTING POWER

    NUMBER OF            3,487,661
                   ----------------------------------------------------------
      SHARES        8    SHARED VOTING POWER
   BENEFICIALLY
     OWNED BY            -0-
                   ----------------------------------------------------------
       EACH         9    SOLE DISPOSITIVE POWER
    REPORTING
      PERSON             3,487,661
                   ----------------------------------------------------------
       WITH         10   SHARED DISPOSITIVE POWER

                         -0-
-----------------------------------------------------------------------------
   11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                         3,487,661
-----------------------------------------------------------------------------
   12      CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
           SHARES (SEE INSTRUCTIONS)
           [ ]
-----------------------------------------------------------------------------
   13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
           7.6%
-----------------------------------------------------------------------------
   14      TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
           CO
-----------------------------------------------------------------------------





CUSIP NO.   137801106                 SCHEDULE 13D/A        PAGE 2 OF 8 PAGES

----------------------------------------------------------------------------
    1      NAMES OF REPORTING PERSONS

           Black Diamond Offshore Ltd.
----------------------------------------------------------------------------
    2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
           (a) [ ]
           (b) [ ]
-----------------------------------------------------------------------------
    3      SEC USE ONLY
-----------------------------------------------------------------------------
    4      SOURCE OF FUNDS (SEE INSTRUCTIONS)
           WC
-----------------------------------------------------------------------------
    5      CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
           TO ITEMS 2(d) OR 2(e)

           [ ]
-----------------------------------------------------------------------------
    6      CITIZENSHIP OR PLACE OF ORGANIZATION

           Cayman Islands
-----------------------------------------------------------------------------
                    7    SOLE VOTING POWER

    NUMBER OF            178,767
                   ----------------------------------------------------------
      SHARES        8    SHARED VOTING POWER
   BENEFICIALLY
     OWNED BY            -0-
                   ----------------------------------------------------------
       EACH         9    SOLE DISPOSITIVE POWER
    REPORTING
      PERSON             178,767
                   ----------------------------------------------------------
       WITH         10   SHARED DISPOSITIVE POWER

                         -0-
-----------------------------------------------------------------------------
   11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           178,767
-----------------------------------------------------------------------------
   12      CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
           SHARES (SEE INSTRUCTIONS)
           [ ]
-----------------------------------------------------------------------------
   13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
           0.4%
-----------------------------------------------------------------------------
   14      TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
           CO
----------------------------------------------------------------------------





CUSIP NO.   137801106                 SCHEDULE 13D/A         PAGE 3 OF 8 PAGES

----------------------------------------------------------------------------
    1      NAMES OF REPORTING PERSONS

           Black Diamond Relative Value Offshore Ltd.
-----------------------------------------------------------------------------
    2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
           (a) [ ]
           (b) [ ]
-----------------------------------------------------------------------------
    3      SEC USE ONLY
-----------------------------------------------------------------------------
    4      SOURCE OF FUNDS (SEE INSTRUCTIONS)

           WC
-----------------------------------------------------------------------------
    5      CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
           TO ITEMS 2(d) OR 2(e)

           [ ]
-----------------------------------------------------------------------------
    6      CITIZENSHIP OR PLACE OF ORGANIZATION

           Cayman Islands
-----------------------------------------------------------------------------
                    7    SOLE VOTING POWER

    NUMBER OF            1,706,783
                   ----------------------------------------------------------
      SHARES        8    SHARED VOTING POWER
   BENEFICIALLY
     OWNED BY            -0-
                   ----------------------------------------------------------
       EACH         9    SOLE DISPOSITIVE POWER
    REPORTING
      PERSON             1,706,783
                   ----------------------------------------------------------
       WITH         10   SHARED DISPOSITIVE POWER

                         -0-
-----------------------------------------------------------------------------
   11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           1,706,783
-----------------------------------------------------------------------------
   12      CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
           SHARES (SEE INSTRUCTIONS)

           [ ]
-----------------------------------------------------------------------------
   13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

           3.7%
-----------------------------------------------------------------------------
   14      TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

           CO
----------------------------------------------------------------------------





CUSIP NO.   137801106                 SCHEDULE 13D/A         PAGE 4 OF 8 PAGES

-----------------------------------------------------------------------------
    1      NAMES OF REPORTING PERSONS

           Carlson Capital, L.P.
-----------------------------------------------------------------------------
    2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
           (a) [ ]
           (b) [ ]
-----------------------------------------------------------------------------
    3      SEC USE ONLY
-----------------------------------------------------------------------------
    4      SOURCE OF FUNDS (SEE INSTRUCTIONS)

           AF
-----------------------------------------------------------------------------
    5      CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
           TO ITEMS 2(d) OR 2(e)

           [ ]
-----------------------------------------------------------------------------
    6      CITIZENSHIP OR PLACE OF ORGANIZATION

           Delaware
-----------------------------------------------------------------------------
                    7    SOLE VOTING POWER

    NUMBER OF            5,605,818
                   ----------------------------------------------------------
      SHARES        8    SHARED VOTING POWER
   BENEFICIALLY
     OWNED BY            -0-
                   ----------------------------------------------------------
       EACH         9    SOLE DISPOSITIVE POWER
    REPORTING
      PERSON             5,605,818
                   ----------------------------------------------------------
       WITH         10   SHARED DISPOSITIVE POWER

                         -0-
-----------------------------------------------------------------------------
   11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                         5,605,818
-----------------------------------------------------------------------------
   12      CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
           SHARES (SEE INSTRUCTIONS)

           [ ]
-----------------------------------------------------------------------------
   13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

           12.3%
----------------------------------------------------------------------------
   14      TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

           PN
--------------------------------------------------------------------------------





CUSIP NO.   137801106                 SCHEDULE 13D/A         PAGE 5 OF 8 PAGES

--------------------------------------------------------------------------------
    1      NAMES OF REPORTING PERSONS

           Asgard Investment Corp.
--------------------------------------------------------------------------------
    2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
           (a) [ ]
           (b) [ ]
--------------------------------------------------------------------------------
    3      SEC USE ONLY
--------------------------------------------------------------------------------
    4      SOURCE OF FUNDS (SEE INSTRUCTIONS)

           AF
--------------------------------------------------------------------------------
    5      CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
           TO ITEMS 2(d) OR 2(e)

           [ ]
--------------------------------------------------------------------------------
    6      CITIZENSHIP OR PLACE OF ORGANIZATION

           Delaware
--------------------------------------------------------------------------------
                    7    SOLE VOTING POWER

    NUMBER OF            5,605,818
                   -------------------------------------------------------------
      SHARES        8    SHARED VOTING POWER
   BENEFICIALLY
     OWNED BY            -0-
                   -------------------------------------------------------------
       EACH         9    SOLE DISPOSITIVE POWER
    REPORTING
      PERSON             5,605,818
                   -------------------------------------------------------------
       WITH         10   SHARED DISPOSITIVE POWER

                         -0-
--------------------------------------------------------------------------------
   11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                         5,605,818
--------------------------------------------------------------------------------
   12      CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
           SHARES (SEE INSTRUCTIONS)

           [ ]
--------------------------------------------------------------------------------
   13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

           12.3%
--------------------------------------------------------------------------------
   14      TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

           CO
--------------------------------------------------------------------------------





CUSIP NO.   137801106                 SCHEDULE 13D/A         PAGE 6 OF 8 PAGES

--------------------------------------------------------------------------------
    1      NAMES OF REPORTING PERSONS

           Clint D. Carlson

--------------------------------------------------------------------------------
    2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
           (a) [ ]
           (b) [ ]
--------------------------------------------------------------------------------
    3      SEC USE ONLY
--------------------------------------------------------------------------------
    4      SOURCE OF FUNDS (SEE INSTRUCTIONS)

           AF
--------------------------------------------------------------------------------
    5      CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
           TO ITEMS 2(d) OR 2(e)

           [ ]
--------------------------------------------------------------------------------
    6      CITIZENSHIP OR PLACE OF ORGANIZATION

           USA
--------------------------------------------------------------------------------
                    7    SOLE VOTING POWER

    NUMBER OF            5,605,818
                   -------------------------------------------------------------
      SHARES        8    SHARED VOTING POWER
   BENEFICIALLY
     OWNED BY            -0-
                   -------------------------------------------------------------
       EACH         9    SOLE DISPOSITIVE POWER
    REPORTING
      PERSON             5,605,818
                   -------------------------------------------------------------
       WITH         10   SHARED DISPOSITIVE POWER

                         -0-
--------------------------------------------------------------------------------
   11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                         5,605,818
--------------------------------------------------------------------------------
   12      CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
           SHARES (SEE INSTRUCTIONS)

           [ ]
--------------------------------------------------------------------------------
   13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

           12.3%
--------------------------------------------------------------------------------
   14      TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

           IN
--------------------------------------------------------------------------------





CUSIP NO.   137801106                 SCHEDULE 13D/A         PAGE 7 OF 8 PAGES


          The Schedule 13D filed on August 25, 2008, as amended by Amendment
No. 1 filed on September 9, 2008, Amendment No. 2 filed on September 25, 2008,
Amendment No. 3 filed on October 8, 2008 and Amendment No. 4 filed on October
31, 2008 (the "Schedule 13D") by Double Black Diamond Offshore Ltd., a Cayman
Islands exempted company, Black Diamond Offshore Ltd., a Cayman Islands exempted
company, Black Diamond Relative Value Offshore Ltd., a Cayman Islands exempted
company, Carlson Capital, L.P., a Delaware limited partnership, Asgard
Investment Corp., a Delaware corporation and Clint D. Carlson (together, the
"Reporting Persons"), relating to the shares ("Shares") of common stock, par
value $0.0001 per share, of Cano Petroleum, Inc. (the "Issuer"), is hereby
amended as set forth below by this Amendment No. 5 to the Schedule 13D.

ITEM 3.        SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

Item 3 of the Schedule 13D is hereby amended and restated as follows:

          The Shares reported herein were acquired at an aggregate purchase
price of approximately $18,641,119 including commissions. The Shares were
acquired with working capital of the Funds and the Account.

ITEM 4.        PURPOSE OF TRANSACTION.

Item 4 of the Schedule 13D is hereby amended and supplemented as follows:

          On May 26, 2009, Steven J. Pully, an employee of Carlson Capital,
L.P., was appointed to the Board of Directors of the Issuer. Mr. Pully's
appointment was effective immediately.

ITEM 5.        INTEREST IN SECURITIES OF THE ISSUER

Paragraphs (a) and (b) of Item 5 of the Schedule 13D are hereby amended and
restated as follows:

          (a) As of the close of business on May 29, 2009, the Reporting Persons
beneficially owned an aggregate of 5,605,818 Shares, constituting approximately
12.3% of the Shares outstanding.

          The aggregate percentage of Shares beneficially owned by the Reporting
Persons is based upon 45,643,735 Shares outstanding, which is the total number
of Shares issued and outstanding as of May 8, 2009 as reported by the Issuer in
its Annual Report on Form 10-Q for the quarter ended March 31, 2009, filed on
May 11, 2009.

          (b) Carlson Capital, Asgard and Mr. Carlson have the power to vote and
direct the disposition of (i) the 178,767 Shares reported herein as owned by
Offshore Ltd., (ii) the 3,487,661 Shares reported herein as owned by Double
Offshore Ltd., (iii) the 1,706,783 Shares reported herein as owned by Relative
Value Offshore Ltd., and (iv) an additional 232,607 Shares held in the Account.





CUSIP NO. 137801106                  SCHEDULE 13D/A          PAGE 8 OF 8 PAGES

                                    SIGNATURE

      After reasonable inquiry and to the best of my knowledge and belief, the
undersigned certifies that the information set forth in this statement is true,
complete and correct.

DATED: June 1, 2009

                                      BLACK DIAMOND OFFSHORE LTD.

                                      By:  Carlson Capital, L.P., its investment
                                           manager

                                      By:  Asgard Investment Corp., its general
                                           partner

                                           By: /s/ Clint D. Carlson
                                               ------------------------------
                                           Name:  Clint D. Carlson
                                           Title: President

                                      DOUBLE BLACK DIAMOND OFFSHORE LTD.

                                      By:  Carlson Capital, L.P., its investment
                                           manager

                                      By:  Asgard Investment Corp., its general
                                           partner

                                           By: /s/ Clint D. Carlson
                                               ------------------------------
                                           Name:  Clint D. Carlson
                                           Title: President

                                      BLACK DIAMOND RELATIVE VALUE OFFSHORE LTD.

                                      By:  Carlson Capital, L.P., its investment
                                           manager

                                      By:  Asgard Investment Corp., its general
                                           partner

                                           By: /s/ Clint D. Carlson
                                               ------------------------------
                                               Name:  Clint D. Carlson
                                               Title: President

                                      CARLSON CAPITAL, L.P.

                                       By:  Asgard Investment Corp., its general
                                            partner

                                            By:   /s/ Clint D. Carlson
                                                  ------------------------------
                                                  Name:  Clint D. Carlson
                                                  Title: President

                                      ASGARD INVESTMENT CORP.

                                      By:    /s/ Clint D. Carlson
                                             -----------------------------------
                                             Name:  Clint D. Carlson
                                             Title: President


                                             /s/ Clint D. Carlson
                                             -----------------------------------
                                             Clint D. Carlson