Houston mold and weed counts ramp aggressively; tree and grass remain stable

Pollen Total:

• The pollen count remained the same at 46 units.

Mold Total:

• The total mold count increased significantly from 4737 units to 9963 units.

• This represents an increase of 5226 units or 110%.

Tree Species (Pollen):

• Carya (Hickory/Pecan):

  • Experienced a decrease in pollen count from 8 units to 20 units (an increase of 12 units or 150%).

• Quercus (Oak):

  • Showed an increase in pollen count from 2 units to 0 units (a decrease of 2 units or 100%).

Weed Species (Pollen):

• Cyperaceae (Sedge):

  • Demonstrated a significant increase in pollen count from 2 units to 10 units (an increase of 8 units or 400%).

• Plantago (Plantain):

  • Showed an increase in pollen count from 16 units to 22 units (an increase of 6 units or 38%).

• Rumex (Sheep Sorel):

  • Experienced a decrease in pollen count from 4 units to 0 units (a decrease of 4 units or 100%).

• Urticaceae (Nettle):

  • Showed an increase in pollen count from 2 units to 6 units (an increase of 4 units or 200%).

• Chenopodiaceae/ Amaranthaceae (Amaranth):

  • Experienced a decrease in pollen count from 0 units to 4 units (an increase of 4 units).

• Other Weed Species:

  • Demonstrated a significant increase in pollen count from 4 units to 14 units (an increase of 10 units or 250%).

Mold Species:

• Several mold species showed notable changes in their counts:

  • Alternaria:

    • Experienced a significant increase in mold count from 32 units to 139 units (an increase of 107 units or 334%).

  • Basidiomycetes:

    • Showed a substantial increase in mold count from 540 units to 1865 units (an increase of 1325 units or 245%).

  • Cercospora:

    • Demonstrated a significant increase in mold count from 2 units to 83 units (an increase of 81 units or 4050%).

  • Cladosporium:

    • Experienced a significant increase in mold count from 431 units to 2903 units (an increase of 2472 units or 574%).

  • Penicillium/Aspergillus:

    • Showed a notable increase in mold count from 60 units to 340 units (an increase of 280 units or 467%).