“ Can you use up them ? ” is the doubt I ’m inevitably ask when we find dense mat of mushroom growing up from ourwood chip mulchafter a good rain .

And while these ace seem quite flamboyant and fleshy , you ’d easily walk by them without a 2d glance .

Each mushroom-shaped cloud is no more than the size of a pinky nail , just a few millimeters extensive and marvelous . In their green state , the mushrooms are invisible nubs with spiky or fluted side , fully stick in to protect the “ ballock ” inside .

A group of intact bird’s nest fungi cups (sporocarp)

As they get on , the caps rupture to reveal a nest of eggs denotive of the mushrooms ’ rough-cut name : chick ’s nest fungi .

What is bird’s nest fungus?

Bird ’s nest fungus — the mushroom cloud — isnotthe same doll ’s nest in Chinese bird ’s nest soup ( which are actual birds ’ nest from the eatable - nest swiftlet and black - nest Collocalia inexpectata ) .

Bird ’s nest fungi are part of theNidulariaceaefamily of fungi , known for their stemless , rounded , hollow fruitbodies that resemble egg - filled birds ’ nest . They includeNidularia , Nidula , Mycocalia , Crucibulum , andCyathus .

The fungi that show up most ofttimes in my garden areCyathus striatus , which have flare , tan - colored cups ( called sporocarp ) holding flattened , sullen hoary “ bollock ” ( called periodoles ) that are shaped like Lens culinaris .

Bird’s nest fungi cups holding “eggs”

They are excellent decomposers and thrive in damp , woodsy environment , often appear inshady veggie gardensor woody mulch path . As long as the clime is moderate with intermittent rainwater , shuttle ’s nest fungi can circularize through any decaying constitutive topic they come in contact with .

Related : What IS That ? ! Dog Vomit Fungus : The Weird Slime Mold in Your Garden

You ’ll find groups of skirt ’s nest fungi in dead tree trunks , rotted timber , wood mulch , barque chip , sawdust , disintegrate vegetation , or humus - rich soil , specially in fall . You ’ll even see them start up in brute dung , as the periodoles can survive a journey through the digestive tract of cows and horses .

Bird’s nest fungi with ruptured cups

The life cycle of bird’s nest fungus

Bird ’s nest fungi are not only entrancing in show , but fascinating in their reproductive strategy . They breed through the “ testicle ” in their cups , but not in the style you might think .

Up close , the eggs are almost metallic looking , resemble glossy river stones . They ’re known as periodoles , and they serve as protective sack for the mushroom ’s spores .

When drop curtain of water from rain or irrigation land in the cups , they discharge the periodoles up to four invertebrate foot away — hopefully to hospitable terrain where they can procreate .

Close-up of periodoles in bird’s nest fungi

At the scale of several millimeters , even a unmarried raindrop can wield enough military force to launch the periodoles like a water system shank . This unique method of dispersal is why you ’ll sometimes try bird ’s nest fungi referred to as “ splash cup . ”

This is where it gets really interesting : Each periodole is connected to a funicular corduroy , essentially a long , hunky-dory thread with a muggy tail that unwindsseveral inch . Yes , inch . From that petite cupful !

As the periodole sails through the air , the cord may come in tangency with , say , a steel of grass or a sprig . It gets caught by its fag end and chop-chop wraps around the forage , much like a high - flying game of tetherball .

Bird’s nest fungi growing in damp soil and wood mulch

Here it remains until the periodole dry , then split up open to release the spores .

When the spores shoot , they grow into branching filaments called hypha . The mass of hypha ( called mycelium ) tissue through moist woody junk and consumes the Sir Henry Joseph Wood to fire its growth .

Bird ’s nest fungi are saprophytes ( microorganisms that live on all in constituent topic ) and this rude process is largely how woodwind decomposes .

A bird’s nest fungus cup with dark gray periodoles inside

When two different mating strains of mycelia fuse together , they imprint a new bird ’s nest fungus that takes nutrient from organic wasteland and violate it down speedily ( speeding up decomposition by two - congregation . ) This cycle ordinarily occurs between July and October .

Having bird ’s nest fungi in the garden makes it much easy and warm to clean up plant rubble , since they reduce declamatory chunks into shaving that finally decay and help enrich the land .

Is bird’s nest fungus edible?

At a duad of just a cm across , bird ’s nest fungi are considered inedible due to their flyspeck size , though no study has ever establish them to be vicious .

Harold J. Brodie , a Canadian mycologist who studied hiss ’s nest fungi extensively , concluded in his 1975 book , The Bird ’s Nest Fungi , that the mushrooms were “ not sufficiently enceinte , fleshy , or odorous to be of interest to human being as intellectual nourishment , ” though some mintage have been used by native peoples to stimulate richness .

The 1910 publicationMinnesota Plant Studiessuggests they are “ not edible owing to their leathery grain . ”

Overhead shot of bird’s nest fungi “eggs” inside cups

So we ’ll give this species a miss , as there are far more satisfying ( and delicious ) mushrooms you could harvest in the wild .

How do you get rid of bird’s nest fungus?

Of all the fungi present in a garden , skirt ’s nest fungus is one of the most good because of its natural composting power . It is n’t harmful to humans , dog , wildlife , or life plants , so control criterion are n’t necessary .

But if the “ eggs ” become a pain ( stupefy to surfaces like cars , house , or other structures where they ’re unmanageable to remove ) , you could diminish the opportunity of wench ’s nest fungi appearing in your railyard by crease the soil oft , fall irrigation in shady areas , and using living mulches andedible ground covers(instead of arborist Natalie Wood chips ) in your garden beds .

Fungicide should never be used , as it could interrupt the natural processes in your ecosystem .

Diagram illustrating how a raindrop launches a periodole through the air and onto a blade of grass to spread its spores

View the Web Story onbird ’s nest fungus .

This post updated from an article that originally appeared on January 15 , 2015 .

Top view of bird’s nest fungi, some with open cups and some with closed cups

Close-up of cyathus striatus mushrooms (bird’s nest fungi)