Cedar - Mountain
From the Aspire Allergy website:
Mountain Cedar (or Ashe Juniper) is one of the most potent allergens. Pollen from mountain cedar and juniper trees is responsible for the mid-winter phenomenon known as cedar fever in central Texas. Pollen is released during December and January and can be carried by prevailing winds for miles. Cedar and juniper pollen allergy symptoms include runny nose, a sore throat, and incessant sneezing. While the allergen itself won't cause a fever (despite the common name "Cedar Fever" for peak pollen season), a subsequent sinus infection due to allergic rhinitis can result in a fever and should be treated immediately.