Power of Attorney





 Know all by these presents, that the undersigned hereby constitutes and appoints each of

Ralph M. Davisson, Malcolm A. Ryerse and Pamela A. Mull, signing singly, the undersigned's true and

lawful attorney-in-fact to:



(1) execute for and on behalf of the undersigned, in the undersigned's capacity as an

officer and/or director of Potlatch Corporation, a Delaware corporation formerly named Potlatch Holdings,

Inc. (the "Company"), Forms 3, 4, and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the

rules thereunder;



(2) do and perform any and all acts for and on behalf of the undersigned which may

be necessary or desirable to complete and execute any such Form 3, 4, or 5,

complete and execute any amendment or amendments thereto, and timely file

such form with the United States Securities and Exchange Commission and any

stock exchange or similar authority; and



(3) take any other action of any type whatsoever in connection with the foregoing

which, in the opinion of such attorney-in-fact, may be of benefit to, in the best

interest of, or legally required by, the undersigned, it being understood that the

documents executed by such attorney-in-fact on behalf of the undersigned

pursuant to this Power of Attorney shall be in such form and shall contain such

terms and conditions as such attorney-in-fact may approve in such

attorney-in-fact's discretion.



 The undersigned hereby grants to each such attorney-in-fact full power and authority to do

and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in

the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as

the undersigned might or could do if personally present, with full power of substitution or

revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact's

substitute or substitutes, shall lawfully do or cause to be done by virtue of this power of attorney

and the rights and powers herein granted.  The undersigned acknowledges that the foregoing

attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming,

nor is the Company assuming, any of the undersigned's responsibilities to comply with Section 16

of the Securities Exchange Act of 1934.



This Power of Attorney shall remain in full force and effect until the undersigned is no

longer required to file Forms 3, 4, and 5 with respect to the undersigned's holdings of and

transactions in securities issued by the Company, unless earlier revoked by the undersigned in a

signed writing delivered to the foregoing attorneys-in-fact.



IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be

executed as of this 3rd day of February, 2006.





/s/ Judith M. Runstad

___________________________

Judith M. Runstad