Сфоткал лист — узнал диагноз и какое тайское удобрение купить. История каждого растения с момента покупки до продажи черенка.

Source signals

• SIG-20260426-sea-mainland-hobbyist-utility-th-monstera-leaf-diagnosis: «My monstera leaf edges are pale (only one leaf, only one side) — what should I do?»
• SIG-20260426-sea-mainland-hobbyist-utility-th-aroid-collection-tracker: «Started growing monstera 5 years ago — I have no record of when leaves grew»
• SIG-20260426-sea-mainland-hobbyist-utility-th-plant-id-care-upsell: PictureThis dominates ID but lacks diagnosis depth + Thai climate context

What we ship

**Core features (MVP)**

• Inventory: each plant with unique ID, photo timeline, purchase date+price, seller/farm, current state
• Leaf-doctor: photo → diagnosis (water/light/nutrient/pest) + recommended TH-available fertilizer with Lazada link
• Lineage-tree of cuttings: "this leaf → cutting A → sold @user_X for 8000 THB" — for premium-cutting PDF cert
• Care journal: watering, feeding, repotting with photo-attach
• LINE reminders: "Water Monstera Albo in 3 days"

**Primary user flow**

1. LINE Login → add first plant (photo + name + purchase price)

2. Weekly — photo of new leaf, leaf-doctor check

3. After 6 months — air-layering, add child-cutting to lineage tree

4. Pro upgrade at 5+ plants or first cutting sale

**What it looks like**

• **Landing**: hero "สมุดต้นไม้ของคุณ — ตั้งแต่วันซื้อ จนถึงวันขายกิ่ง" + lineage tree examples + before/after leaf-doctor
• **Main app screen**: photo grid of all plants + alert badge on plants with detected problems
• **Leaf-doctor screen**: uploaded photo → 3 candidate diagnoses with confidence + specific Thai fertilizer brands

**MVP build plan (11 days)**

• Day 1-3: backend (Plant/Photo/Lineage models), R2 photo upload
• Day 4-6: leaf-doctor LLM prompt + Lazada SKU mapping (top-50 TH plant nutrients)
• Day 7-9: lineage tree UI + PDF cert for serious cutting sales
• Day 10-11: LINE reminders, landing, deploy + Pantip topic 40999234 reply + FB groups

Reasoning

Pantip topics 40999234 and 39872941 show a recurring pattern: collectors photograph yellow/burned leaves and ask the forum because PictureThis (dominant solution) only IDs species, not diagnoses problems. The 2020-2022 COVID boom created a huge TH aroid collector cohort — Anthurium clarinervium, Monstera Albo Variegata cost 5K-100K THB. These users are motivated to pay for tools. Stack ideal: Cloudflare PWA + Railway + R2 for photo storage + Claude vision for diagnosis. **medium competitive pressure** — PictureThis is strong in plant ID, but doesn't cover diagnosis + inventory + lineage; we position as "PictureThis for those who already know the species".

Quick competitive read

• **PictureThis / Plantum** — plant ID, $50/year, no diagnosis depth, no TH locale. ~10M downloads global.
• **Greg / Planta** — care-reminder apps, generic advice, no vision diagnosis, no lineage.
• **Discogs** — inventory + value-tracking model we port to plants.
• **Positioning**: PictureThis answers "what is it"; we answer "why it's sick + what to buy on Lazada + collection history". Direct competitors with traction — 0-1.

Initial pricing hypothesis

Free — up to 5 plants, basic journal, 3 leaf-doctor queries/mo. Pro — 199 THB/mo (~$5.5) or 1490 THB/year for unlimited plants + unlimited leaf-doctor + lineage PDF. Premium tier for cutting sellers — 299 THB/mo with whitelabel lineage cert. 99-299 THB band fits collectors with 30K-50K THB plants.

Distribution hypothesis

1) Direct reply on Pantip topics 40999234, 39872941 ("built a leaf-doctor app, try it"); 2) FB groups "กลุ่มคนรัก Monstera", "Anthurium Thailand" (50-100K each); 3) Instagram micro-influencers with aroid collections (10-50K followers); 4) TikTok shorts "5 signs your Monstera has a problem" with soft CTA; 5) Lazada affiliate gives side-revenue + organic traffic.