The last two weeks of flowering are critical for quality, potency, and final yield. At this stage, the plant is no longer focused on growth, but on ripening flowers and resin. Below are practical, experience-based tips to help finish strong.

1. Focus on Ripening, Not Growth

During the final two weeks, avoid trying to “push” the plant.

Do not increase nutrients to force swelling

Avoid major changes to environment or feeding

Stability is more important than optimization at this point

Stress late in flower often reduces quality rather than improving yield.

2. Adjust Nutrients Carefully

Reduce or Stop Nitrogen

Excess nitrogen delays ripening and affects flavor

Leaves naturally yellow as the plant finishes—this is normal

Optional Flush (If Part of Your Method)

Many growers flush with plain water 7–14 days before harvest

Goal: reduce salt buildup and improve burn and taste

Use your standard water pH (soil: ~6.5, coco: ~5.8–6.0)

Note: Flushing philosophy varies—follow what has worked for you consistently.

3. Dial in Temperature and Humidity

Environmental control is critical to prevent mold and protect terpenes.

Recommended ranges:

Temperature:

Day: 20–24°C (68–75°F)

Night: 17–20°C (62–68°F)

Relative Humidity: 40–45% RH (even lower for dense buds)

Lower humidity reduces the risk of bud rot and improves resin quality.

4. Maintain Strong Airflow

Ensure steady air movement around and through the canopy

Avoid direct fan blast on buds

Remove only clearly dead leaves if airflow is blocked

Good airflow is one of the best defenses against late-flower mold.

5. Watch Trichomes, Not the Calendar

Harvest timing should be based on trichome maturity, not flower days alone.

Clear trichomes: too early

Cloudy/milky: peak THC

Amber: more sedative effects

Most growers harvest when:

Majority are cloudy

5–20% amber, depending on desired effect

Use a jeweler’s loupe or microscope for accuracy.

6. Avoid Heavy Defoliation or Training

In the final two weeks:

Do not top, train, or heavily defoliate

Only remove leaves that are fully dead or blocking airflow

The plant needs its remaining leaves to finish properly.

7. Reduce Stress and Handle With Care

Avoid moving plants unnecessarily

Minimize light leaks during dark cycles

Be gentle when inspecting—trichomes are fragile

Stress late in flower can reduce terpene retention.

8. Prepare for Harvest in Advance

Use this time to get ready:

Clean drying space

Set drying environment (18–21°C / 60–70°F, 55–60% RH)

Prepare tools and storage

A smooth harvest prevents rushed mistakes.

The last two weeks of flowering are about patience and consistency. Keep the environment stable, resist overfeeding, and let the plant finish naturally. Most quality gains at this stage come from what you don’t do, rather than what you add.