Harvest · wash-pack · FSMA caveats · not a kit

How to harvest and wash-pack from a high tunnel: carts, crates, snips, spinners, and FSMA caveats (sourced)

Growers search high tunnel harvest cart, food-grade harvest crate, greens spinner, wash tub, produce scale, and FSMA Produce Safety Rule when the beds are full and the aisle is the packing line. This page is the harvest-and-wash sibling — how product leaves the house, what a cleanable crate is versus a garden wagon, why shade and a cooler beat a sunny end-wall pile, and which FDA and extension pages actually name knives, dump tanks, 3-bay sinks, and sanitizer. Winter lettuce calendars stay on high-tunnel winter lettuce. House shade percentage stays on high-tunnel shade cloth. Drip tape stays on high-tunnel drip irrigation. Bed tools stay on high-tunnel bed-prep tools. Tomato season and trellis stay on high-tunnel tomatoes. It is not a commercially manufactured high-tunnel kit and not a USDA payment schedule.

Quotes copied 26 October 2026, about 04:30 UTC from the live FDA Produce Safety Rule page, FDA Small Entity Compliance Guide, eCFR 21 CFR Part 112, UVM Produce Safety Portal triple-wash SOP, UVM Estrin/Grubinger greens-spinner page, Rutgers FS1268, K-State / Produce Safety Alliance sanitizing PDF, Virginia Tech / AOFT postharvest PDF, plus the High Tunnel System Initiative FAQ and the Pennsylvania seasonal high tunnel page. Featured Amazon prices copied the same night. A missing featured price stays an em dash. Ratings are not copied. UVM pound and minute figures stay labeled farm SOP. This page does not invent a sanitizer ppm, a USDA dollar, or a tool price.

Kit index: commercially manufactured kits. Replacement-parts directory: high-tunnel replacement parts. Drip: drip irrigation. Bed prep: bed-prep tools. Tomatoes: high-tunnel tomatoes. Winter lettuce: winter lettuce. House shade: shade cloth. Size map: high-tunnel sizes. County inspection: EQIP checklist. What the program will not pay for: EQIP will not pay for. Affiliate method: about / disclosure.

Harvest in the cool. Shade first. Cooler within the hour.

A high tunnel on a sunny day is a heat box. Rutgers wrote the lettuce version of that sentence. Virginia Tech wrote the shade-and-delay version. UVM wrote the cooler-morning SOP. Those are three pages, not one table.

On sunny days the high tunnel temperatures will be elevated, and it is important to get harvested lettuce into cool temperatures as soon as possible. Ideally lettuce should be in a cooling environment within an hour from harvest. Harvested lettuce should be removed from sun and heat as soon as possible.

Source: Rutgers Cooperative Extension — Meredith Melendez, Ultra-Niche Crop Series: Winter Lettuce Postharvest Handling and Food Safety, FS1268 (April 2017; opened 26 October 2026). Storage numbers on that same sheet: The optimal storage temperature for lettuce is 32°F. The ideal relative humidity for lettuce storage is between 90 and 95%. Once in the cooler the lettuce bins may be stacked, but no more than two high to allow for air circulation. Lettuce held at 32°F can be stored for up to four weeks, lettuce held at 41°F will have a reduced storage life of three weeks. Those are lettuce cooler sentences, not a harvest-cart spec. Flavor: Lettuce flavor will not improve postharvest.

Shade harvested produce. Start harvest early to protect produce from temperatures above 70 to 75°F. A one-hour delay in cooling reduces shelf life by one day or more.

Source: Virginia Tech / AOFT — Keeping Produce Fresh: Postharvest Handling for Market Growers and Farm-to-Institution Sales (PDF opened 26 October 2026; photo credits on that PDF include Tianna DuPont, Penn State — not a PSU fact sheet). Tools: Use clean and sanitized tools, knives, and containers. House shade cloth — 30–70% over the film — stays on high-tunnel shade cloth. This page owns a tarp or shade over harvested crates, not a house takeoff.

During the cooler morning hours, harvest greens into a harvest can that is lined with a clear, unscented trash can liner. Full bag will hold approx. 8-15 lbs of produce. Place greens in cooler immediately after harvest.

Source: UVM Produce Safety Portal — Triple washing raw-eaten greens such as leaf-lettuce and spinach (SOP opened 26 October 2026). Farm SOP example, not a national mandate. The 8–15 lb liner and “immediately after harvest” are that farm’s words.

Cleanable crates. Wagons haul. Wood is the caveat.

FDA packing material is cleanable or single-use. A steel-mesh garden wagon is transport. K-State limits wood as food-contact. Featured Amazon tonight has a garden harvest basket and bus tubs — not a slotted farm crate and not a Gorilla cart (those PDPs had no featured price).

Food-packing material must be adequate for its intended use. It must be cleanable or designed for single use. You may reuse food-packing material if you take steps to prevent contamination, such as cleaning the containers or using a clean liner (21 CFR 112.116).

Source: FDA — Standards for the Growing, Harvesting, Packing, and Holding of Produce for Human Consumption: What You Need to Know About the FDA Regulation; Small Entity Compliance Guide (PDF opened 26 October 2026). Equipment examples: Equipment and tools include, for example, knives, harvest containers, bins, dump tanks, and vehicles used to transport covered produce. Storage: Buildings include structures used to store harvest containers.

Re-using containers is possible, but only if you know that they are not contaminated prior to use. Sanitizing in accordance with a food-grade sanitizer's label directions is acceptable, or use a single-use liner.

Source: Rutgers Cooperative Extension — Meredith Melendez, Ultra-Niche Crop Series: Winter Lettuce Postharvest Handling and Food Safety, FS1268 (April 2017; opened 26 October 2026). Same sheet: annual worker hygiene training. Workers coming in contact with produce and its growing area should receive annual training on human health and hygiene specific to fresh produce safety.

Wood should not be used in food applications. Limit wood as a food-contact surface. Equipment and tools must be cleanable. Document the date and method of cleaning and sanitizing.

Source: K-State Research and Extension / Produce Safety Alliance — Cal Jamerson, Sanitizing (March 2020; reviewed Nwadike / Stoeckel PSA Cornell; opened 26 October 2026). Do not treat a wood bulb crate as a washable food-contact tote.

Knives, snips, and what you do not harvest

FDA names knives. FDA also names the produce you leave in the bed. Cut surfaces off the soil to the degree practicable. Featured Amazon tonight: Zenport H300S and Bahco P128-19.

Farmers are required to take all measures reasonably necessary to identify and not harvest produce that is likely to be contaminated. At a minimum, this requires all covered farms to visually examine the growing area and all covered produce to be harvested, regardless of the harvest method used.

Source: FDA — FSMA Final Rule on Produce Safety (live page opened 26 October 2026). SECG dropped-produce and soil-contact lines: Do not distribute dropped covered produce (except for produce that grows off the ground, such as root or ground crops, or produce that is dropped as part of harvesting). You must identify, and not harvest, covered produce that is reasonably likely to be contaminated with known or reasonably foreseeable hazards, including animal excreta (21 CFR 112.112). You must take all measures reasonably necessary to avoid contact of cut surfaces of harvested covered produce with soil to the degree practicable (21 CFR 112.113).

Three bays, a spinner, then a slotted crate

UVM published a farm SOP, not a regulation. The 5-gallon crank spinner on that campus page is why a restaurant-scale spinner shows up in the Amazon table. Wet greens into storage is the food-safety sentence.

We fill all 3 bays of the wash sink with cold potable water. Produce is placed in the left-most sink and submerged by pushing the material underwater a few times. Produce is then lifted from the sink and some of the water is shaken out before it is dropped into the center sink. It is again submerged and swished 2-3 times before being lifted out and placed into the final rinse in the right-most sink. Produce is then placed into a spinner and spun at low speed for a few minutes.

Source: UVM Produce Safety Portal — Triple washing raw-eaten greens such as leaf-lettuce and spinach (SOP opened 26 October 2026). Sanitize the line first: Spray/wipe clean and sanitize all 3 bays of the sink and the spinner (inner and outer compartments) prior to greens washing. About 10 lb in the dirty bay: There should be approximately 10 lbs. of greens in the sink. Spin: From the right-side “clean” bay hand drain and transfer greens into the spinner to the right and set to spin for approximately 3 min. Pack: After spinning, hand transfer greens into a clean green slotted packing crate, label date(/) and place on a shelf in the cooler. Those 8–15 lb / 10 lb / 3 min figures stay labeled farm SOP.

Greens spinners that work well keep greens from being too wet going into storage, which reduces their shelf-life and can promote the growth of human pathogens. Manual-crank institutional grade spinners (5 gal.) are typically hygienically designed and can efficiently accommodate up to 25 lbs. of product. The 5-gal hand-crank "restaurant-scale" spinner (above) is the entry-level work horse for small-scale greens growers (up to 30 lbs of greens/session).

Source: UVM Extension — Hans Estrin and Vern Grubinger, Safe, Easy, Low-Cost Produce Handling: Greens Spinners (opened 26 October 2026). Converted washers: Converted washing machines can easily accommodate several times that amount, but they cost more and need to be properly converted to reduce risk of cross contamination. Manual spinners (2.5 or 5 gal. capacity) are used for a single employee processing 5 to 25 lbs. of greens in a typical processing session. Converted washing machines can handle up to 75 lbs. per session. Design goal: Spinner basket is non-porous, easily removed, and can be cleaned completely. Do not average 25 lb, 30 lb, and 75 lb into a Tunnel Spec spinner table.

Clean first. Sanitize when necessary. Follow the label.

FDA says clean, and when necessary and appropriate, sanitize food-contact surfaces as frequently as reasonably necessary. K-State says you cannot sanitize dirt. Neither page prints a Tunnel Spec ppm.

You must inspect, maintain, and clean and, when necessary and appropriate, sanitize all food-contact surfaces of equipment and tools used in covered activities as frequently as reasonably necessary to protect against contamination of covered produce (21 CFR 112.123(d)(1)).

Source: eCFR — 21 CFR Part 112, Standards for the Growing, Harvesting, Packing, and Holding of Produce for Human Consumption (opened 26 October 2026), restated in FDA — Standards for the Growing, Harvesting, Packing, and Holding of Produce for Human Consumption: What You Need to Know About the FDA Regulation; Small Entity Compliance Guide (PDF opened 26 October 2026). Examples: Equipment and tools subject to the requirements of this subpart are those that are intended to, or likely to, contact covered produce; and those that are used in growing, harvesting, packing, or holding covered produce (for example, knives, harvest containers, bins, dump tanks, and vehicles).

You cannot sanitize a dirty surface. Cleaning and sanitizing are two different steps. Four steps: (1) remove debris, (2) scrub with detergent, (3) rinse with water that has no detectable generic E. coli in 100 mL, (4) apply sanitizer according to the label and air dry. High-pressure washers can spread pathogens.

Source: K-State Research and Extension / Produce Safety Alliance — Cal Jamerson, Sanitizing (March 2020; reviewed Nwadike / Stoeckel PSA Cornell; opened 26 October 2026). The “no detectable generic E. coli in 100 mL” rinse line is that PDF’s wording — not a house water test Tunnel Spec invented. Follow the sanitizer label. Do not reuse a sample log ppm.

This section of the rule covers, for example, greenhouses, germination chambers, and other such structures, as well as toilet and hand-washing facilities. Required measures to prevent contamination of covered produce and food contact surfaces include, for example, appropriate storage, maintenance and cleaning of equipment and tools. Using hygienic practices when handling (contacting) covered produce or food-contact surfaces, for example, washing and drying hands thoroughly at certain times such as after using the toilet.

Source: FDA — FSMA Final Rule on Produce Safety (live page opened 26 October 2026). Greenhouses are in the buildings sentence. A high tunnel used as a harvest and pack space is not automatically exempt from equipment and hygiene duties on a covered farm.

Coverage is not automatic. $25,000 is FDA’s line.

Not every high-tunnel grower is a covered farm. FDA printed the produce-sales coverage line and the qualified-exemption tests. Those are FDA dollars, labeled FDA, not Tunnel Spec dollars.

The rule does not apply to Farms that have an average annual value of produce sold during the previous three-year period of $25,000 or less.

Source: FDA — FSMA Final Rule on Produce Safety (live page opened 26 October 2026). Qualified exemption: The farm must have food sales averaging less than $500,000 per year during the previous three years and The farm’s sales to qualified end-users must exceed sales to all others combined during the previous three years. A qualified end-user is either (a) the consumer of the food or (b) a restaurant or retail food establishment that is located in the same state or the same Indian reservation as the farm or not more than 275 miles away. The Produce Safety rule establishes, for the first time, science-based minimum standards for the safe growing, harvesting, packing, and holding of fruits and vegetables grown for human consumption. Confirm with FDA or your state produce-safety program. Not legal advice.

Sourced Amazon harvest and wash-pack gear

Titles and featured one-time prices were copied from live amazon.com product pages 26 October 2026, about 04:30 UTC. Garden wagons, food-grade crates, and a Dramm wash nozzle had no featured listing tonight. Skipped: B01BECQBZ0 — Gorilla Carts GOR400-COM: live PDP, currently unavailable / no featured one-time price.; B00F1U5R2S — Gorilla Carts GOR4PS poly garden cart: HTTP 403 tonight.; B0BQNBY9SP — JEZERO harvest-crate 6-pack: Amazon error page.; B0B2CNDSGZ — Dramm nozzle + quick-connect bundle: interstitial / continue-shopping block.; B00004R9TL — Dramm 12304 Touch-N-Flow URL resolved to an unrelated BLACK+DECKER trimmer-line listing. Skipped.

EQIP pays for the structure, not the wash line

Harvest carts, crates, knives, wash tubs, spinners, scales, and shade tarps sit outside the High Tunnel System Initiative payment. Confirm with your NRCS district conservationist. Tunnel Spec does not invent a dollar.

Under the High Tunnel System Initiative, financial assistance is provided only for the structure itself. Electricity, venting systems, lighting, etc. can be installed providing the additions meets manufacturer’s designs and specifications. However, the grower is responsible for those costs.

Source: USDA NRCS High Tunnel System Initiative FAQ (Updated November 2024; Oregon-branded). That PDF names electricity and venting systems as grower cost. It is silent on a harvest-crate dollar.

Producers can install heating, ventilation, or electrical systems at their own expense.

Source: USDA NRCS Pennsylvania — Seasonal High Tunnel System for Crops. One state office page, not a national wash-pack payment. More exclusions: what EQIP will not pay for.

Rules vary; call your county NRCS office.

FAQ

What harvest and wash-pack gear do growers use from a high tunnel?

UVM’s triple-wash SOP harvests greens in the cooler morning into a harvest can lined with a clear unscented trash liner (about 8–15 lb), then moves them to a cooler immediately; the wash is a 3-bay potable-water sink, then a spinner for about 3 minutes, then a clean slotted packing crate back to the cooler. UVM Estrin/Grubinger: a 5-gal institutional crank spinner is the small-farm workhorse (up to 25 lb; also “up to 30 lbs/session”); converted washers up to 75 lb per session if properly converted. Rutgers FS1268 (winter lettuce in a high tunnel): get product into a cooling environment within an hour; stack bins no more than two high; reuse containers only if not contaminated — sanitize per a food-grade sanitizer label or use a single-use liner. Virginia Tech / AOFT: shade harvested produce; start harvest early to stay off 70–75°F. Those are their farm and fact-sheet sentences — not a Tunnel Spec SKU list and not a national mandate. Featured Amazon rows tonight are a harvest basket, two harvest shears, bus tubs, a 5-gal spinner, and an 11 lb analog scale. Garden wagons and food-grade crates had no featured listing.

Does the FSMA Produce Safety Rule apply to every high-tunnel farm?

No. FDA’s live Produce Safety Rule page says the rule does not apply to farms whose average annual value of produce sold during the previous three-year period is $25,000 or less — that is FDA’s printed coverage line, not a Tunnel Spec dollar. The same page describes a qualified exemption: food sales averaging less than $500,000 per year for the previous three years, and sales to qualified end-users (the consumer, or a restaurant or retail food establishment in the same state or Indian reservation or not more than 275 miles away) exceeding sales to all others combined. Covered farms still have worker hygiene, animal-intrusion, and equipment/tool/building duties; FDA names greenhouses among those buildings. Confirm coverage with FDA / your state produce-safety program. This page is not legal advice and does not decide whether your house is covered.

How do you sanitize food-contact harvest tools and wash tubs?

K-State / Produce Safety Alliance (March 2020): you cannot sanitize a dirty surface; cleaning and sanitizing are two steps. Their four-step outline is remove debris, scrub with detergent, rinse with water that has no detectable generic E. coli in 100 mL, then apply sanitizer according to the label and air dry. They warn that high-pressure washers can spread pathogens, and that wood should not be used in food applications / should be limited as a food-contact surface. 21 CFR 112.123(d)(1), as opened on eCFR and restated in FDA’s Small Entity Compliance Guide: inspect, maintain, and clean and, when necessary and appropriate, sanitize all food-contact surfaces of equipment and tools as frequently as reasonably necessary. FDA SECG examples include knives, harvest containers, bins, dump tanks, and vehicles. Follow the sanitizer label. Do not treat a K-State sample log row as a Tunnel Spec ppm, and do not invent a house takeoff.

How fast should harvested greens get out of the tunnel and into shade or a cooler?

Rutgers FS1268 (high-tunnel winter lettuce): on sunny days tunnel temperatures are elevated; get harvested lettuce into cool temperatures as soon as possible; ideally a cooling environment within an hour; remove from sun and heat ASAP; 32°F storage and 90–95% RH are that fact sheet’s lettuce numbers — not a harvest-cart spec. Virginia Tech / AOFT: a one-hour delay in cooling reduces shelf life by one day or more; start harvest early to protect produce from temperatures above 70 to 75°F; shade harvested produce. UVM’s SOP harvests in cooler morning hours and places greens in the cooler immediately after harvest. Do not average those sentences into a Tunnel Spec °F table.

Is a garden wagon or a wood crate a food-contact harvest container?

FDA SECG: food-packing material must be adequate for its intended use and cleanable or designed for single use; reuse is allowed if you clean the containers or use a clean liner (21 CFR 112.116). K-State / PSA: wood should not be used in food applications and should be limited as a food-contact surface; equipment must be cleanable. A steel-mesh garden wagon is a transport, not a food-contact tote — FDA still names vehicles used to transport covered produce as equipment. Rutgers: reuse sales containers only if you know they are not contaminated; sanitize per a food-grade sanitizer label or use a single-use liner. Featured Amazon tonight has a Fiskars garden harvest basket and Afromy bus tubs; food-grade slotted crates and Gorilla-style carts had no featured listing. Do not treat a wagon bed as a washable harvest crate.

Does EQIP / NRCS practice 325 pay for harvest carts, crates, or wash-pack gear?

Tunnel Spec does not invent eligibility or dollars. The High Tunnel System Initiative FAQ (Updated November 2024) says financial assistance is provided only for the structure itself, and that electricity, venting systems, lighting, etc. can be installed if they meet manufacturer designs — the grower is responsible for those costs. The Pennsylvania seasonal high tunnel page says producers can install heating, ventilation, or electrical systems at their own expense. Harvest carts, crates, knives, wash tubs, spinners, scales, and shade tarps sit with those grower costs. Confirm with your NRCS district conservationist. See what EQIP will not pay for.

Rules vary; call your county NRCS office. Tunnel Spec does not determine eligibility, payment rates, or inspection outcomes. Not a sanitizer table and not a USDA dollar. As an Amazon Associate, we earn from qualifying purchases.