Buying a CSA Share — What to Ask Before You Commit

A CSA share is a pre-paid subscription to a farm. You hand the farmer money in February, and from May through October (or January through April, in the desert) you pick up a box of whatever's ripe that week. It's the most direct way to fund a small farm and the most direct way to a kitchen full of vegetables you didn't choose.

That last part is the catch. A CSA is a great relationship for the right person and a frustration spiral for everyone else. I'm going to walk you through what CSA actually is, why so many subscribers don't renew, the questions to ask before you commit, the red flags to walk away from, and the honest test for whether you'll actually eat the box.

This is the post I wish someone had handed me before I joined my first CSA. We won't recommend a specific farm here — we keep an updated regional directory at nonfarmersonly.com for that — but we'll arm you to evaluate any CSA in the Southwest or California.

What CSA actually is

CSA stands for Community Supported Agriculture. The model originated in 1980s Switzerland and Japan, came to the US through small farms in Massachusetts, and is now run by something on the order of seven thousand farms nationally. According to USDA Census of Agriculture data, CSA arrangements accounted for roughly $225 million in direct-to-consumer farm sales in 2020, or about 7-8% of the direct-to-consumer total.

The structure is straightforward:

• The farmer plans the season and prices a share to cover seed, labor, and a margin.
• Members pay upfront — usually a few hundred to a thousand dollars — for a season's worth of weekly boxes.
• Each week the farmer harvests, packs the boxes, and either delivers to a pickup spot or runs a drop site at the farm.
• Members pick up. They get whatever's ripe. They cook what's in the box.

You are buying a share of the harvest, with all the upside and all the risk that implies. A great year for tomatoes is a great year for you. A bad spring frost is a thinner box.

Why retention is hard (the unspoken truth)

The CSA model has a chronic retention problem. The biggest survey research on CSA retention — the FairShare CSA member survey out of Wisconsin and a 2019 sustainability study of 111 California CSA farms — both find that member retention from one season to the next is the single biggest predictor of whether a CSA farm survives.

Retention varies wildly farm-to-farm. The well-run farms hold 60-75% of members year-over-year. The struggling ones lose more than half. Across the industry, churn is the norm — most members try a CSA for one or two seasons and then drift back to grocery stores or markets.

The reasons members give for not renewing are remarkably consistent across surveys:

• "Got too much produce, couldn't keep up."
• "We didn't actually eat what was in the box."
• "Pickup time didn't work for our schedule."
• "We went on vacation in July and lost three weeks of share."
• "We didn't know what to do with the kohlrabi / dandelion greens / sorrel / fennel bulb."

Notice none of those are about the farm being bad. They're about a mismatch between the model and the member's life. The job of the questions below is to surface that mismatch before you've handed over $600.

The questions to ask before you commit

Print this list. Email it to the farm before you sign up. A good CSA farmer has answered all of these before, in writing, and will respect you for asking.

1. Pickup vs. delivery, and where, and when

• Is this a farm pickup, a drop-site pickup at a coffee shop or yoga studio, or a home delivery?
• What day, what time window?
• Is the window narrow (Tuesday 4-6pm only) or wide (Tuesday 7am-7pm)?
• If I miss pickup, what happens? (Donated, held until next week, or forfeited?)

This is the single biggest predictor of whether a member renews. If the pickup is on the wrong night for your life, you will resent the share by week four.

2. Share size

• How big is the box, in pounds and item count?
• Is there a half-share or a small-share option?
• For a household of two: a small or half-share is almost always right. Full shares are sized for families of four to six who cook every meal at home.

A common error: enthusiastic non-farmers buying full shares "to challenge ourselves" and then composting half the box because they're traveling, eating out, or just don't want eight pounds of summer squash this week.

3. Vacation policy

• What happens to my share when I'm out of town?
• Can I pause for a week and extend the season?
• Can I swap a missed week to a friend or neighbor?
• Can I donate to a food bank?
• Can I bank the share value as farm credit?

If the answer is "use it or lose it," that's a real cost. The average member misses 2-4 weeks per season for travel, illness, or schedule conflicts. At $25-35 per box, that's $50-140 of pre-paid value walking off.

4. Pause/swap features

• Is there a member portal where I can log in and pause my share?
• Or do I have to email two days in advance?
• Or is it tough luck?

The farms with modern member-portal software (often built on Harvie, Local Food Marketplace, or Farmigo) tend to have the best retention. Manual email-based vacation requests work but are slower and easier to forget.

5. Season length and start dates

• When does the season start, and when does it end?
• For Southwest CSAs, the season is often inverted — January through April, or November through May — because summer is too hot to grow most things.
• For California CSAs, year-round shares are common, but boxes change radically by season.

A 12-week share at $30/week is $360. A 26-week share at $30/week is $780. The total commitment matters as much as the per-box price.

6. What's in a typical box, by month

• Ask the farm for a "typical box" example for each month of the season.
• A good farm publishes this. A great farm sends photos.
• Look for items you actually cook with. If June is "summer squash, eggplant, basil, tomato, peppers" and you don't cook with any of those, this isn't your CSA.

7. What happens in a bad week

• If a frost wipes out the spring greens, do members get a smaller box, a substituted box, or a partial credit?
• What's the farm's track record for the past 2-3 seasons?
• Long-running CSAs (8+ years) have weathered enough crop failures to have real answers. Ask.

8. Pricing and payment plans

• Can I pay monthly instead of upfront?
• Is there a sliding scale or low-income share?
• Does the farm accept SNAP/EBT for the share?
• Many CA and AZ farms participate in Double Up Food Bucks programs — worth asking.

9. Transparency

• How can I visit the farm?
• Are there member work shares (you trade hours for a discount)?
• Are there member events — farm dinners, harvest festivals, pickling workshops?

A farm that wants you on-site is a farm proud of how it operates. A farm that's vague about visits is a farm hiding something — usually scale, sometimes practices.

10. What "organic" means here

• Is the farm certified USDA Organic, Certified Naturally Grown (CNG), biodynamic, or none of the above?
• If none, what does their pesticide and fertility approach actually look like?
• We have a whole post on what organic means at a farmers market — same questions apply.

Don't dismiss a non-certified farm. Many small Southwest farms skip USDA Organic certification because the paperwork costs $700-3000+ a year and pulls a week of farmer time off the field. They may follow organic practices fully and just not pay the cert fee. The right answer is to ask.

Red flags — walk away

These are dealbreakers. Not "ask more questions" — actually walk away.

Prepay-everything, no-cancel, no-refund. Some CSAs structure the upfront payment so aggressively that you cannot get out, even if the farm goes under in July. State laws vary, but a contract with no cancellation language is a contract you should not sign for a season-length subscription.

Vague "what's in season." A farm that can't tell you, in writing, what was in last June's box should not be running a CSA. That's a red flag for either inexperience or evasiveness about scale.

No farm visit policy. Every legitimate small farm wants members to visit. If the answer to "can I come see the farm" is "we'd rather not," you're being kept at arm's length for a reason.

One-person operation, never been audited. Some CSAs are "drop-shipped" — the operator is sourcing produce from wholesalers and reselling it as a CSA share. That's not a CSA. That's a produce subscription with a farm aesthetic. Ask point-blank: "is everything in the box grown on your farm or is some sourced?" Some sourcing is normal (fruit from a partner orchard, eggs from a partner farm). All sourcing is a problem.

Promises of variety that don't match the climate. A Phoenix-area CSA promising "tomatoes and peppers year-round" is either growing in serious greenhouse infrastructure (rare and expensive) or sourcing wholesale. Ask which.

Pressure to commit fast. "Sign up by Friday or you'll lose your spot" is a sales tactic. A good CSA fills earlier each year because of retention, but the urgency should come from genuine demand, not artificial scarcity.

The honest test: will you actually eat the box?

This is the test most non-farmers fail. Do it now, before you sign up.

Open your fridge. Look at the produce drawer.

• How much of what's currently in there is wilting, going soft, or going to the compost bin in the next three days?
• How many meals at home did you cook last week?
• How many of those meals featured the produce you bought?

If your fridge has half a bag of slimy spring mix, two soft cucumbers, and a bunch of cilantro turning yellow, and you cooked at home twice last week, you are not ready for a CSA. You will join, get behind in week three, and start composting an entire box every Wednesday.

If your fridge is mostly emptied of produce, you cooked at home five nights, and you ran out of vegetables before the end of the week, you are exactly the right CSA member.

Halfway between? Try a half-share or a six-week trial CSA before committing to a full season. Some farms offer a "starter" or "summer-only" option. Use it.

How to know if you'll actually eat 8 lbs of kale

Because you will, in fact, get 8 lbs of kale at some point. Here's the rule:

If you cannot name three specific dishes you'd cook with kale, off the top of your head, right now, in under fifteen seconds, you do not yet have the cooking habits to handle a full-share CSA. You will need to develop them in week one and you will fall behind.

The same goes for chard, kohlrabi, dandelion greens, beet greens, fennel, sorrel, dinosaur kale, mustard greens, escarole, frisée, and any other "what is this and what do I do with it" item the box will throw at you.

Solution: subscribe to one good cookbook that's organized by ingredient. Six Seasons by Joshua McFadden, Vegetable Literacy by Deborah Madison, or any of the Ottolenghi books. Use the index. When the box arrives, look up what's in it.

This is the actual life-skill behind a successful CSA membership. The farm is doing its job. Your job is to be the kind of cook who matches it.

Should you join one?

A CSA is the right tool for:

• Households that cook 5+ meals at home a week
• Cooks who treat the seasonal box as a creative prompt, not a meal-plan
• People who like a relationship with a specific farm and want to fund its survival
• Anyone who has tried it for a season and renewed (the strongest signal)

A CSA is the wrong tool for:

• Households that travel often or eat out 4+ nights a week
• Cooks who only buy specific items for specific recipes
• Picky eaters or households with conflicting preferences
• Anyone who doesn't want to be told what's for dinner this week

Both are valid. The wrong tool isn't a moral failing — it's a mismatch.

If you're not sure, the directory at nonfarmersonly.com lists every CSA in AZ and CA we can verify, with share-size, pickup, vacation policy, and pause/swap notes pulled from the farm's own page. Sort by what matters most to your life. The farm that's perfect for your neighbor will be wrong for you.

The best CSA is the one you'll renew in year two. Pick the one that fits the life you actually live, not the life you wish you had.

Eat smarter.

— Roma