Kilaim6: 8
הַקָּנִים הַיּוֹצְאִים מִן הֶעָרִיס וְחָס עֲלֵיהֶם לְפָסְקָן, כְּנֶגְדָּן מֻתָּר. עֲשָׂאָן כְּדֵי שֶׁיְּהַלֵּךְ עֲלֵיהֶן הֶחָדָשׁ, אָסוּר.
[If] poles protrude from the trellis and he values them [as is] and does not want to cut them, opposite them it is permitted [to plant]. [If] he made them in order for new growth to go on them, it is forbidden.