Case Study 17.2 🔬 Deep Dive: Whether the Friday Survives
📜 From the Field
The Reyes–Whitfield wedding is a Tier 3 illustrative composite. Marisa Wrenfield, Wrenfield Flowers, and Tullo Lane Growers are constructed, as is every price. The arithmetic is meant to be checked, and this case is unusual in that the first version of the order does not work and the chapter says so.
Act One: What Chapter 16 Assumed
The design concept ended with a line in the "still open" table:
$130 of foliage requires three hours of family labour on the Friday, agreed with nobody.
That assumption is the whole of this case. Everything else in the Reyes–Whitfield design is settled: the through-line, the palette, the repeated element, the warm oatmeal linen, the light plan. What is not settled is whether one afternoon of unpaid work by people nobody has asked can actually produce thirteen tables of flowers.
This case tests it, and the first answer is no.
Act Two: The Order That Does Not Work
Here is the naive version — the one that follows directly from Chapter 16's design and Chapter 17's stem counts.
💰 Run the Numbers: attempt one
Item Spec Stems Cost 13 table runs 30 in long, 6 in tall 30 each = 390 ? Bar face 6 ft along the front edge 40 ? 2 aisle markers Meadow, head of aisle 25 each = 50 ? Bridal bouquet Loose, seasonal, hand-tied 42 ? 7 personal pieces Sam, both fathers, Rosa Reyes, 2 attendants, Elena 4 each = 28 ? ~550 stems At $110 of material — Chapter 16's figure — that is $0.20 a stem.
It is not a price. It is a wish. Grower-direct foliage and grasses in September run $0.35–$0.80 a stem in quantity; dahlias run $1.50–$2.50.
550 stems at a realistic blended $0.50 is $275 — before the bouquet is made by anyone, before sundries, and before the four DIY conditions are tested.
Against $387.69, with a bouquet still to buy, the order is roughly $100 short before it starts.
This is the correct outcome of a first pass and it is why you do one. Chapter 16 designed the room; it did not price the stems, because §16.6's surface hierarchy is a tool for allocation and not for procurement.
Act Three: The Four Conditions, Tested
§17.3 gives four conditions for DIY floral. Test them before rebuilding the order, because two of them change what the order can be.
⚡ Quick Reference: the four conditions at Reyes–Whitfield
Condition Verdict 1 Cold space, 2–8°C ❌ Fails. The barn overnight in September runs 12–15°C. Nothing at Wildrye is cold 2 Buckets, water, and drainage ❌ Fails at the venue. No potable water at the tent (Ch.15), and access is Saturday 7 a.m. only (Ch.8 §3) 3 Named, confirmed bodies on the Friday ⚠️ Conditional. And the Friday is also the rehearsal 4 One person who has done it before ❌ Fails outright. Nobody in either family has
Condition 1 is solved by the design, not by a cold room
Foliage, ornamental grasses, and seed heads do not need 4°C. They have long vase life, they tolerate 12–18°C for two days, and several of them look better slightly dried.
Dahlias do not. They are the shortest-lived thing on the list and they blow open in a warm room overnight — which is exactly what happened in Case Study 17.1.
🔍 Why Does This Work? Chapter 16's through-line — "something that grew here" — chose foliage and grasses for design reasons, and it has just solved a cold-storage problem it knew nothing about.
This is the third time in this project that a decision made for one reason turned out to be right for another. Family style was chosen for money, bought fifty minutes, and became the centrepiece. Watch for it: constraints that agree with each other are usually a sign that the through-line is real.
The decision that follows: the table runs are foliage, grasses, and seed heads only. No dahlias in the runs. Dahlias appear only in the bouquet and the seven personal pieces — both of which are made by, or under, a florist with a cold room.
Condition 2 moves the work off site
The conditioning and design happen at the house the Reyes family have rented for the weekend, fifteen minutes from Wildrye: a tap, a garage, a driveway, and somewhere to dump water.
Two consequences:
- Thirteen made-up runs and seven personal pieces travel by car on Saturday morning. That is a vehicle, a person, and a fifteen-minute drive — and it is not on Chapter 13's arrivals list.
- Only placement happens at the venue. Everything is built on Friday. This is what makes the whole route possible.
Condition 3 has a scheduling conflict
Named: Elena Reyes (Alicia's sister), and cousins Beatriz and Danny.
And the Friday is the rehearsal. Chapter 24 owns the rehearsal; it is at 5:30 p.m. at the meadow, and all three of these people are in the wedding party.
Resolution: the floral session runs 2:00–4:30 p.m. Friday, ending an hour before anyone needs to leave. It is tight and it works, and it only works because it was checked.
Condition 4 costs $110
Nobody has done it before, and §17.3 is blunt about this: one experienced person and five willing ones works; six willing ones does not.
The fix: buy ninety minutes of a florist.
Marisa Wrenfield makes the bouquet, delivers it Friday afternoon, and stays to lead the session — she demonstrates the first two runs, supervises the next four, makes the seven personal pieces with whoever wants to learn, and leaves at 4:30.
$110. Which is 28% of the entire floral budget spent on not doing the flowers, and it is the best money in this order.
Act Four: The Order That Works
💰 Run the Numbers: the Reyes–Whitfield floral order
Item Spec Stems Cost Bridal bouquet — Wrenfield Flowers Loose, hand-tied, asymmetric. Dahlias, grasses, seed heads. Delivered Friday, cold-stored overnight at Marisa's studio, collected Saturday 11 a.m. 42 $135.00 Friday session — Marisa Wrenfield, 90 min Demonstrates 2 runs · supervises 4 · makes the 7 personal pieces · leaves the group to finish 7 — $110.00 Material — Tullo Lane Growers, collected Thursday p.m. Bulk bucket: mixed foliage, ornamental grasses, seed heads, hydrangea in dried tones, ~14 dahlias for the personal pieces ~292 $115.00 Sundries Twine, reel wire, two pairs of snips, 8 buckets (bought and kept) — $20.00 Subtotal $380.00 Held against market movement $7.69 TOTAL $387.69 What the 292 stems become:
Stems Spec 13 table runs 234 (18 each) 20 in long, under 6 in tall — see below 7 personal pieces 28 4 each, dahlia-led Bar face ~20 A single length along the front edge, from offcuts 2 aisle markers ~10 + offcuts Meadow, head of the aisle
The honest note about eighteen stems
§17.2a says a low run should be 25–40 stems per 3 feet. This one is 18.
That is thin — at 30 inches. It is correct density at 20 inches.
🚪 Threshold Concept: when the material runs out, shorten it — do not thin it
A 30-inch run at 18 stems and a 20-inch run at 18 stems contain identical flowers and cost identical money. One looks sparse and one looks full, and the difference is entirely the length somebody decided on.
Density reads as abundance. Length reads as ambition. A guest four feet away registers how full the thing is, not how far it extends — and a table with a short dense run and a lot of clear linen reads as deliberate, while a table with a long thin run reads as a budget.
This is the single most transferable rule in the chapter, and it applies well beyond floral: to lighting, to signage, to canapés on a tray. When the quantity is fixed, reduce the footprint rather than the density.
And it is why the 6-inch height limit matters twice over. Chapter 11's sightline rule set it; Chapter 14's family-style platters confirmed it; and now it also means the run holds density at a small stem count, because a low run is a line rather than a volume.
Act Five: The Substitution Plan
The order has two halves and they need different mechanisms.
The bouquet and personal pieces — a clause
Marisa is buying stems. §17.5's clause applies:
Substitution. Wrenfield Flowers is authorised to substitute without prior approval, provided the substitution: (a) maintains the agreed colour range — greens, dried tones, rust, no white — and overall scale; (b) introduces nothing on the veto list; (c) does not reduce the stem count or physical volume; (d) does not increase the agreed price.
Notification to the Planner within 24 hours of purchase, in writing. Notification, not approval.
Veto list: baby's breath (any form, any quantity — non-negotiable, family reason) · carnation · anything white or cream · roses.
The table runs — no clause needed
🔍 Why Does This Work? The runs were never specified by species.
The brief to Tullo Lane is:
"A bulk bucket, about 290 stems, mixed. Foliage, ornamental grasses, seed heads, and hydrangea in dried tones — whatever is good that week. Greens, browns, rust. Nothing white, nothing pastel, nothing floppy. Plus about fourteen dahlias in dark tones. We're collecting Thursday afternoon."
There is nothing in that brief for the market to fail to supply. A substitution clause protects a specification against reality; this brief has no specification to protect.
Chapter 14 §14.2's move — brief the constraints, not the list — turns out to be substitution-proof by construction, and that is a stronger position than any clause. Where you can, specify a role rather than a species. Where you cannot — a bouquet, where the couple have seen images and formed expectations — write the clause.
Act Six: The Schedule
🕐 From the Run Sheet: the floral chain, Thursday to Sunday
When What Who Where Thu 4:00 p.m. Collect the bulk bucket from Tullo Lane Elena Reyes Tullo Lane, 20 min Thu 5:00–7:00 Conditioning — strip, cut under water, into treated water Elena, Beatriz Rental house, garage Thu overnight Drinking. Garage, ~14°C. No dahlias in this batch — — Fri 2:00 p.m. Marisa arrives. Delivers the bouquet (to her cold store afterward). Session begins Marisa + 3 Rental house Fri 2:00–4:30 13 runs built · 7 personal pieces built · everything into buckets Marisa + 3 Fri 4:30 Marisa leaves. Runs stay in water in the garage overnight — Fri 5:30 REHEARSAL — all three are in the wedding party (Ch.24) Meadow Sat 11:00 a.m. Collect the bouquet from Wrenfield Flowers Unassigned — see below Sat 12:45 p.m. Load the car. 13 runs, 7 pieces, 2 markers, bar length Danny Rental house Sat 1:00 Arrive Wildrye. Not on Ch.13's arrivals list ~1:30 Linen complete (Ch.13 chain) Rentals crew 1:30–2:30 Placement. Runs on 13 tables, bar face, 2 aisle markers Elena + Danny 2:30 Done. 45 min ahead of Ch.13's 3:15 target Sun 8:00–9:30 a.m. Green waste. 13 runs, ~300 stems, into the family's cars for composting Unassigned — see below
Where floral sits in the chain
TENT ────┐
├─► FLOORING ─► TABLES ─► LINEN ──┐
FLOORING ┘ │
▼
STRING LIGHTS RIGGED ─────────────────► ★ FLORAL (1:30)
(ladders out of the tent by 1:15) │
▼
PLACE SETTINGS (2:30)
Alt-text: A dependency diagram. Tent and flooring precede tables; tables precede linen; linen and the completion of string-light rigging both precede floral placement at 1:30; floral precedes place settings.
Floral is fourth in a four-step chain and it has 60 minutes. It fits only because everything was built on Friday — a florist arriving at 1:30 with raw stems would need four hours and would not have them.
⚠️ Two unassigned tasks, and Chapter 27's rule says both will not happen
Saturday 11 a.m., collect the bouquet. Everybody in the family is at Wildrye or getting ready. This needs a name and it does not have one.
Sunday morning, 300 stems of green waste. Removal is 10 a.m. and there is no collection at a private field. This needs a name, a vehicle, and a destination.
An unassigned task is an unhappened task. Both go to Chapter 27's assignment sheet with a person against them, and the second one goes to Chapter 30.
Act Seven: Repurposing, and the Cake Table
Chapter 16 found the cake table with nothing on it, and Aunt Bernarda's cake arriving on it.
💰 Run the Numbers: does the move pay?
The two aisle markers, from the meadow to the cake table.
Cost of two new pieces ~$28 of material — which the budget does not have Cost of moving the two existing $0 Labour: one person, 8 minutes — Window: 5:10–6:20, cocktail hour, meadow empty, tent unoccupied ✅ Four conditions (§17.6):
- ✅ There is a window — 70 minutes
- ⚠️ Somebody named — currently nobody. Goes to Ch.27
- ✅ They are movable — built loose in a vessel, not wired to anything, because they were told they would move
- ✅ The second position wants the same object — a small loose piece works either side
And it solves a Chapter 16 finding for free, which is the general shape of repurposing: the money is not the point. The point is that you already own an object and there is a surface with nothing on it.
Act Eight: What Gets Cut First
The Project Checkpoint asked for it. The honest answer is uncomfortable.
| Candidate | Saving | Consequence |
|---|---|---|
| The Friday session | $110 | The route collapses. Four willing amateurs and no experience |
| The bouquet, made in the session instead | $135 | Loses the one item §17.8 says to spend on, and the one that is photographed all day |
| 4 of 13 table runs | ~$35 | Four tables have nothing. Visible and worse than all thirteen being thinner |
| The 7 personal pieces | ~$14 | The cheapest line, and the one whose absence a specific named person notices |
| The material, to ~230 stems | $25 | Runs to 14 stems at 20 in. Now genuinely thin |
🚨 When It Goes Wrong: an order with no fat
There is nothing to cut. Every line is either load-bearing or worth less than $35.
Which means the answer to "what if the money moves" is not a cut. It is a route change — and the route change costs more, not less. If the Friday collapses (someone is ill, the rehearsal moves, the material is poor), the fallback is an à la carte studio at roughly **$520 for the runs alone**, against $245 of material and session.
A budget with no reserve does not have a contingency plan; it has a hope. And the $7.69 held against a floral market that swings 15–30% is not a reserve.
This goes to Chapter 25 on top of everything else Chapter 16 sent it. It is small — perhaps $300 of exposure — and it sits on a contingency now at 2.9%.
The Whole Order
⚡ Quick Reference: Reyes–Whitfield floral, complete
Total $387.69 — 0.9% of the wedding Route Grower-direct material + DIY, with a paid 90-minute florist session Made by Marisa Wrenfield (bouquet, 7 personal pieces, 2 demo runs); Elena, Beatriz, and Danny (11 runs) Material ~292 stems, foliage, grasses, seed heads, dried-tone hydrangea, 14 dahlias Spec 13 runs at 20 in × under 6 in, 18 stems — short and dense, not long and thin Substitution A clause on the bouquet; specified-by-role on the runs, which needs none Install Saturday 1:30–2:30, fourth in the chain, only possible because everything was built Friday Repurposed 2 aisle markers → cake table, during cocktail hour Reserve $7.69. Which is not a reserve Unassigned Bouquet collection Saturday 11 a.m. · 300 stems of green waste Sunday
Discussion Questions
1. Act Two's first order was $100 short before it started, and the case leaves the failure visible. What is the general lesson about the relationship between a design concept and a purchase order?
2. Two of the four DIY conditions failed and both were bought back — one with $110 and one with a car. Price the car. Is the route still worth it?
3. The runs are 18 stems at 20 inches rather than 30 stems at 30 inches. Test the "shorten, do not thin" rule against three other event categories — canapés, lighting, signage — and say where it breaks.
4. The table runs need no substitution clause because they were specified by role. What was given up to get that property? Name a situation where specifying by role would be wrong.
5. $110 — 28% of the floral budget — is spent on ninety minutes of a florist who makes almost nothing. Defend the spend to a couple who ask why they are paying someone to watch.
6. Two tasks are unassigned and the case says both will therefore not happen. Assign them, and say what makes a name on a run sheet different from an intention.
7. The case concludes that this order has no fat and therefore no contingency plan. What should Chapter 6 have allocated to floral, knowing everything now known? Give a number and defend it against the couple's ranking.
Mini-Project
Build a floral order you cannot afford.
Take a real venue, a real guest count, and give yourself $4 per guest. Then:
- Do the naive version first and let it fail. Price it honestly at your market's real stem prices.
- Test the four DIY conditions against the actual venue and the actual people. Name them.
- Buy back the ones that fail, and put a price on each buy-back.
- Rebuild the order with dimensions and stem counts, using shorten-don't-thin where the material runs out.
- Write the substitution plan — a clause where you have specified species, and a role-based brief where you have not.
- Place it in the load-in chain with a start time, and check what must finish first.
- Find every unassigned task and put a name against it.
- State the reserve honestly, and if it is not a reserve, say so.
Deliverable: one itemised order, one four-condition test, one substitution plan, one schedule. Step 1 is the one people skip and it is the one that teaches.
Connections
- Chapter 8 §3 — Saturday 7 a.m. access, which is why nothing can be built at the venue on Friday
- Chapter 11 — the sightline rule, which set 6 inches and now also holds the density
- Chapter 13 — the load-in chain, and a vehicle that is not on the arrivals list
- Chapter 14 §14.2 — brief the constraints, not the list; here it turns out to be substitution-proof
- Chapter 15 — no potable water at the tent
- Chapter 16 — the through-line that solved a cold-storage problem it knew nothing about; the empty cake table
- Chapter 24 — the Friday rehearsal at 5:30, and three people who are in both places
- Chapter 25 — a $300 exposure on a 2.9% contingency
- Chapter 27 — two unassigned tasks
- Chapter 30 — 300 stems of green waste against a 10 a.m. Sunday deadline