Indoor Plants Conditions

Why Plants Struggle?

• Outdoor heat is extreme → indoor only in summer

• Indoor AC drops humidity and can cause leaf edge crisping

• Low humidity + poor soil = pests + root stress

Target Environment (Numbers That Work)

Temperature: 20–26°C

Humidity: 45–65% (ideal for most aroids)

Airflow: gentle, constant (not AC blasting directly)

If you want to be extra pro, aim for:

• VPD around 0.8–1.2 kPa for aroids (stable growth zone)

Lighting (Real Settings)

Forget “bright light.” Use measurable targets:

Aroids (Monstera/Philodendron/Anthurium foliage types)

• PPFD: 100–250 for steady growth

• Variegated plants: 150–300 (watch burning)

Seedlings / TC acclimation

• PPFD: 50–120 (start low, ramp over 2–3 weeks)

Photoperiod: 10–12 hours/day

(Too long can stress plants and bleach variegation.)

Humidity Setup (Without Making Mold)

• Humidifier + hygrometer (must)

• Keep airflow on to prevent fungus

• Don’t let leaves stay wet overnight

Rule: If humidity > 70%, airflow must increase.

Airflow & Fans (Underrated)

Use:

• Small oscillating fan on low

• Keeps pests down and strengthens stems

• Prevents fungal issues in moss poles

Avoid:

• Direct AC vent hitting leaves

Substrate & Pots (Most Failures Come From This)

• Use chunky aroid mix

• Always drainage holes

• Decorative pot = nursery pot inside (never plant directly)

Quarantine Station (Stops Disaster)

Every new plant:

• Isolate 14 days

• Inspect with flashlight + magnifier

• Sticky traps nearby

• Prevents thrips spreading to your entire inventory