There is no such verb as to mistletoe. Mistletoe is a decoration, like holly, so the term decorate, or festoon, might apply. If there were a verb form, it is unclear whether it would apply to the act of decoration or to the social custom (kissing beneath it).
Nonetheless, the term mistletoeing is used as a Christmas rhyming word in the song "It's the Most Wonderful Time of the Year" popularized by Andy Williams.
Mistletoe.
mistletoe
The correct spelling is mistletoe.
The plant used as decoration at Christmas is spelled mistletoe.
The plant associated with Christmas (Phoradendron serotinum in the US) is spelled "mistletoe".
The plant connected with Christmas traditions is spelled mistletoe (not the same as holly).
Mistletoe!
Mistletoes is the plural of mistletoe
mistletoe
Mistletoe is a plant belonging to the order Santalales.There are over 900 species of mistletoe but the mistletoe that is commonly sold for Christmas is the species Phoradendron flavescens.
Mystyldene, all-heal, bird lime, golden bough, and devil's fuge.
That is the correct spelling of "Christmas decorations" (trees, lights, ornaments, wreaths, garlands, mistletoe).