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Nostoc spp.

Common Name(s):
Algae
Category:
Herbs
Comment:

Algae are primitive, root-less plant-like organisms that we generally associate with the green scum which forms in ponds. However one species common in nurseries, Nostoc sp., forms dark green gelatinous masses on persistently moist surfaces such as nursery ground cloth, black plastic, or gravel pads. When wet, these mats of tissues are slippery, creating safety hazards. Without water, plants dry quickly to a flaky brown mass that is easily scraped off, but will return rapidly when irrigation is resumed. Algae can be reduced by improving drainage and irrigating earlier in the day to allow surfaces to dry during the day. No chemical treatments are specifically labeled for these plants. 

Tags:
weed

NCCES plant id: 3040

Nostoc spp Nostoc spp
Nostoc spp close up