EXHIBIT 12 (b)
EX-99.906CERT
RULE 30a-2(b) CERTIFICATION
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of title 18, United States Code), each of the undersigned officers of Seligman Time Horizon/Harvester Series, Inc. (the registrant), do hereby certify, to such officer’s knowledge, that:
| (1) | The semi-annual Report on Form N-CSR of the registrant for the six months ended June 30, 2006 (the “Form N-CSR”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
| (2) | the information contained in the Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the registrant. |
| By: | /s/ BRIAN T. ZINO | ||
| Brian T. Zino | |||
| Chief Executive Officer | |||
| Date: | August 30, 2006 | ||
| By: | /s/ LAWRENCE P. VOGEL | ||
| Lawrence P. Vogel | |||
| Chief Financial Officer | |||
| Date: | August 30, 2006 |