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The map

The network

The network of support a city already has: gardens, events, producers, seed libraries, free offers and volunteer roles across Greater Houston, at neighborhood precision.

What the network does

sq ft in conservation
6,913
counted
native species
125
counted
households
55
counted
neighbor conversations a year
≈720
provisional
gatherings a year
14
provisional
hours of moderate movement a year
≈1,400
provisional

Figures marked provisional are modeled from the existence of the gardens, with assumptions disclosed on the methodology page. Each is replaced by measurement on a published schedule, and every replacement is announced.

◆ The ledger

Every place, named

Each garden below is a real front yard, tended by a neighbor who chose to put it on this map.

14 gardens in their keepers' care. 2 shown here, by their keepers' choice.

The rest are on the map inside the Portal. A garden appears in public only when the person who tends it says so.

No gardens in view. Move the map, or clear the filters.

What grows here

Every layer says whether its numbers are counted or estimated.

No layers shown.

Only nodes whose owner chose to make them public appear here, and every location is shown at neighborhood precision (rounded to roughly a kilometer) — never an exact address. Nodes belonging to minors are never shown. Members control what's public per node and can opt every node out at once. See our privacy policy for how the public map works.

Claim it, or add it
Around town
EventsEvery event names its yard, its host, and what your hands will do. What a block plants together, it keeps.VolunteerPlanting days, seed swaps, and neighbors helping neighbors. Bring yourself. That is enough to belong.PartnersA garden within a mile is made by many hands, and so is Holon. These are the organizations we work with, what each does, and the ground we share.
Bitterweed, Helenium amarum, as a cyanotype
BitterweedHelenium amarumSeen in a Houston front yard · Summer 2026
Black-eyed Susans, Rudbeckia hirta, as a cyanotype
Black-eyed SusansRudbeckia hirtaSeen in a Houston front yard · Summer 2026
Gaura, Oenothera lindheimeri, as a cyanotype
GauraOenothera lindheimeriSeen in a Houston front yard · Summer 2026
Volunteer

Show up and lend a hand

Any organization serving the commons can post its own opportunities here, free and forever. A directory, never an agency.

Holon takes volunteers now, in the gardens and behind the scenes. Walking rounds is a commissioned role that opens with the first neighborhood.

Find a planting day
Two people digging and clearing a curbside bed by an iron fence
Your place

Claim it, or add it

Whether your organization is already on the map or not yet, taking your place is free and takes minutes.

Not listed yet? Add it.Growers, nurseries, seed keepers, gardens, event hosts — and any organization with a skill, tool, or space the city's gardens can use. If it serves the commons, it belongs here.Already listed? Claim it.If you represent an organization or event that's already on the map, sign in and claim it. A person at Holon confirms it is you, and from then on the listing is yours: your description, your details, your events.Start your own yard's recordA free account, your yard, the commitments you choose to hold. The witnessed round and the support that follows it open with the first neighborhood.

You choose how visible to be, node by node: only you, members, or the public map. Nothing you own can be changed by anyone else, minors are never shown publicly, and one switch takes everything of yours off the public map at once.