The Weed That Found a Wetland
Half an acre of cocklebur in the southernmost corner of the floodplain basin turns out to be one of the best survey instruments on the land — and the start of a seasonal wetland pocket.
Fig · The patch in the low corner of Section 04 · cocklebur growing where the water stood · July 2026There's a half acre in the southernmost corner of the Floodplain Agricultural Basin where the Tifton stops growing. In its place is a solid stand of one waist-high plant, packed in edge to edge, ending right where the ground rises and the Tifton comes back. Twenty years of hay never grew into it, and talking to the older land manager, they have never been able to harvest from this area.
The plant that did end up growing incredibly well here is known as cocklebur (Xanthium strumarium), an annual that specializes in colonizing bare mud and crowding out everything else with its large leaves.
A stand this dense tells us the low spot in the field ponds after the spring rains and holds water long enough to kill the bermudagrass. Cocklebur seed waits in the soil for this exact opportunity. When nothing else grows, the cocklebur takes over.
What the patch is telling us
The stewardship plan for the property already marked the low ground in the south of the property for wetland work, based on elevations and contours alone. What we didn't fully understand until now was the exact boundary of this seasonal wetland. The cocklebur traces the ponding zone edge to edge nearly perfectly. Where it grows, water stood this spring; where the bermuda held on, we started to hit dry land. We couldn't have mapped that line more precisely with instruments, but the land showed us exactly how it works.
What goes in the pocket
The plan is to plant the pocket the way the water dictates. The spot that ponds longest, the ring that floods and dries, the shaded edge along the pecans, and the rim. We plan on planting plugs and dormant woody stock here rather than running it over with the native seed drill. Here's what we are currently thinking. Some will stick and thrive, while it may be too dry or too wet for others, but only time will really tell.
Reference images — not made on this property
Picking this list took more ecological range-checking than we initially expected. Our rule for the R&D Library and what we plant is documented records within about forty miles of this ground and with similar limestone qualities. Cherokee sedge is a notable exception we kept. NPSOT maps it to the country east of us, and the nearest record we can find is about forty miles away at Fort Cavazos. It's the wet-meadow sedge nurseries actually sell, and the sedges with local records are harder to buy. This sedge goes into our record labeled as a trial, planted next to the local sedges so we can compare what establishes. We may be wrong about it. We'll find out.
Two placement details matter for the woody rim. Bald cypress seedlings drown if their crowns go underwater. Mature cypress trees stand in it indefinitely, but young ones establish on the drawdown line, so ours go on the rim rather than down in the bottom. They stay out from under the pecans, because cypress wants full sun. Long term, this grove is the interesting part of the planting. If it grows out along its wet flank into the pocket and up to the edge of the existing pecans, it could add up to about an acre and a half of pecan-and-cypress seasonal wetland with a lower-lying woody wetland understory. This is a couple of phases away, but a dream outcome for this section of the property.
The calendar
- August, before the burs harden — mow the patch. Every bur that matures now is weeding we'll be doing for years in ground we're about to plant.
- Mid-September — the second glyphosate pass under the PUB program takes the regrowth. Cocklebur is susceptible.
- October–November — sedge, rush and spikerush plugs go in on the drawdown, with frogfruit sprigged between them. Not into standing water — plugs set in saturated soil rot before they root.
- December–February — dormant buttonbush and bald cypress on the rim, buttonbush cuttings to the propagation bench, and bushy bluestem seed in with the winter dormant sowing.
- March — the seed bank flushes and the cocklebur comes back. A high clip at eight to twelve inches knocks it down without touching the natives coming up under it.
There's a real unknown under all of this: we don't actually know how long the pond holds water. This is the first year we've watched it closely, which is why the bulrush decision waits and why some of this plan will probably turn out wrong. This is one of my favorite experiments we currently have running on the property.