This fall, wire cages of baby oysters went over the side of piers around Bay Hundred for the 16th season of Tilghman Islanders Grow Oysters. Next May they will come back up and be planted in the Harris Creek Oyster Sanctuary. Most of what decides how big that planting will be has already happened. Last season showed how much depends on the hatchery calendar and how little depends on the dock.
Last Season Was Short Before the Cages Went In
Phillips Wharf Environmental Center runs the program, known locally as TIGO. Its staff collected 120 oyster cages from volunteer growers during the last week of May 2026. The season 15 wrap-up puts the planting at about 6,500 oysters, compared with more than 28,000 the season before. The center said directly that the drop was "through no fault of our volunteers."
The trouble started at the hatchery. Phillips Wharf planned to pick up its spat on shell at the beginning of October 2025, but the pickup was pushed back several weeks because of production issues. When the bags came, a sample of the shells showed very few oysters. At the spring coordinator meeting for Marylanders Grow Oysters, other groups reported the same thing, and the representative from the Horn Point Oyster Hatchery described it as a tough year for setting spat.
Then winter made things worse. Spat that reached the docks in mid-October had little time to grow before the water got too cold. In January 2026, ice formed on the Chesapeake Bay. Even by the end of March, Phillips Wharf found the water still too cold for much spat growth. The volunteers did their part, but the oysters never had much of a season.
This Year's Bags Came About Two Months Earlier
According to its September 4, 2026 season kickoff post, Phillips Wharf received this season's spat bags in mid-August. Staff measure a sample at the start of each season so they can track growth and estimate how many oysters survive to planting. This year's numbers are much better.
| Measure | Season 15, 2025/26 | Season 16, 2026/27 |
|---|---|---|
| Spat bags received | Late October 2025 | Mid-August 2026 |
| Average spat size at start | 3.7 mm | 6.9 mm |
| Spat per cultch shell | Few in sampled bags | "Significant increase" over last year |
| Planted in Harris Creek | About 6,500 in spring 2026 | Counted next May |
The extra weeks matter most. In last year's account, timing caused the trouble: the oysters arrived late, grew little before the water cooled, and then waited through an unusually cold spring. Phillips Wharf expects the earlier start to make a difference:
"Our hope is that this year, since we're starting earlier with more oysters, they'll have lots of time to grow before the winter comes and they stop growing. This gives them a better chance at surviving inclement weather, should we see a lot of ice and very cold temperatures like we did last winter."
These figures describe Phillips Wharf's own bags, not everything Horn Point produced in 2026. On Tilghman, though, the cages hanging off local piers this November started with larger oysters, more of them per shell, and roughly two extra months of warm water.
What the Dock Owner Still Controls
The volunteer's job is small. The TIGO sign-up form says Phillips Wharf drops off and picks up the cages, and growers periodically check them and rinse off mud and sediment. The center's oyster restoration page describes the same thing as an occasional shake to keep dirt and debris off the oysters. In its season 15 wrap-up, Phillips Wharf calls TIGO "a full service program": staff deliver the cages, collect them, clean them, and plant the oysters.
Winter is when the dock matters most. The Oyster Recovery Partnership's Marylanders Grow Oysters FAQ tells growers to lower cages for the winter so they hang underwater just above the creek bottom. It also says to clean fouling off with water or a brush and never use soap. After a winter of Bay ice, that is the one step a grower can take to protect this year's head start.
Where the Cages Go in May
Each spring, Phillips Wharf pays a local waterman to carry the grown oysters out to the Harris Creek Oyster Sanctuary and plant them. TIGO has planted there since it began in 2011. That was also the year Maryland started restoring Harris Creek under the Chesapeake Bay Watershed Agreement.
The program is small next to the state's effort. Phillips Wharf has planted more than 840,000 juvenile oysters since it started. Over the same period, the state planted 2.9 billion spat on shell at a total cost of $29 million. Even so, the reef the dock oysters join is doing well. The Maryland Department of Natural Resources' 2021–2025 sanctuary assessment compares fall survey averages across five-year periods:
- Live oysters per square meter: 465 in 2021–2025, up from 80 in 2006–2010.
- Live spat per square meter: 178.7 in 2021–2025, up from 22.7 in 2006–2010.
- Observed mortality: 6.7 percent in 2021–2025.
Post-restoration surveys found that 343 of the 348 restored acres met or beat the state's success threshold of 15 oysters per square meter over 30 percent of the reef. That made Harris Creek the first tributary counted as successfully restored toward the 2014 Chesapeake Bay Watershed Agreement oyster goal. The 2021–2025 assessment classifies the sanctuary as restored. DNR's management review also lists Harris Creek among the seven most productive sanctuaries, above the 80th percentile.
So the oysters from Tilghman's docks go into a reef that is already working. A good TIGO year adds healthy, well-grown oysters to that reef, and a short year like the last one adds fewer.
A Program That Outlasted Its Campus
TIGO is still a Tilghman program, even though the organization behind it no longer has a base on the island. Phillips Wharf began in 2005 in a rebuilt crabbing shanty along Knapps Narrows and grew into a 5-acre waterfront campus in 2015. The COVID-19 pandemic ended in-person programs and eventually forced the Tilghman location to close. The center has since moved to the future Easton Point Park on the Tred Avon River.
These days the cages on private piers are the most visible part of that history on the island. The oysters still come from Horn Point by way of Phillips Wharf, now based in Easton, and they still end up in Harris Creek. In between, they spend about nine months on docks around Bay Hundred, and each season depends on how many dock owners sign up.
Signing Up for the 2026/27 Season
Phillips Wharf is taking sign-ups for season 16. Here's how it works:
- Contact: Email [email protected], or fill out the TIGO program form, which is new this year and serves as both sign-up and waiver. The older paper form is available by email.
- Who qualifies: Volunteers in the Bay Hundred area with waterfront access to a pier or dock.
- How many cages: The form lets you request from one to ten.
- Cost: Participation is free. Phillips Wharf estimates it spends about $40 per cage to run the program and welcomes donations online or by check to Phillips Wharf, PO Box 3117, Easton, MD 21601.
- How long: Cages stay out for nine to ten months. Statewide, Marylanders Grow Oysters cages usually go out between August and October and come back between May and July. This season's spat has been in hand since August, so email is the best way to ask when a new cage could reach your pier.
Oyster season shows up on shore too. The Tilghman Watermen's Museum's 2026 ornament shows a waterman tonging for oysters. It costs $25, tax included, at the Lee House at 6031 Tilghman Island Road, Two If by Sea, 2 Vintage Chics Boutique, and Fairbank Tackle. The museum is closed in November and reopens in December for its annual Christmas display. Talbot County's tourism site lists the Crab Basket Tree Lighting outside the museum at 5 p.m. on Saturday, Dec. 5, followed by the Knapps Narrows Lighted Boat Parade at 6 p.m.
If you'd like to talk about life on the water here, from your pier to the oyster calendar, Cornelia Heckenbach is glad to share what she knows of this shoreline. Let's Connect.