# Should I harvest the whole plant at once or in stages?

> Harvest a cannabis plant in stages when the top colas are ready and the lower buds clearly aren't, often a difference of several days. Cut the tops at mostly cloudy with some amber, then give the lower buds roughly 5–10 more days, feeding normally. If the whole plant reads within a few percent, or bud rot or pollen threatens, harvest everything at once. Never flush or darken before either cut.

- Canonical: https://genetixbay.com/knowledge/answers/harvest-in-stages.html
- Topic: Harvest and cure · Type: How-to
- Evidence: Grower practice · Status: Draft: awaiting expert review
- Full article: [Trichome ripeness: clear, cloudy, amber, and what the evidence says](https://genetixbay.com/knowledge/harvest-cure/trichome-ripeness.md)
- Also asked as: Should I harvest the top colas first? | How do I do a staggered harvest? | My bottom buds aren't ready yet | Is it worth harvesting in two stages?
- Updated: 2026-10-31 · Licence: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/), attribute "GenetixBay Knowledge Base (genetixbay.com/knowledge)"

## Short answer

Harvest in stages when the [top colas](https://genetixbay.com/knowledge/glossary/cola.md) are ready and the lower buds clearly aren't. Cut the [tops](https://genetixbay.com/knowledge/glossary/top-shelf.md) at mostly cloudy with some amber, then give the lower buds roughly 5–10 more days, fed and lit as normal. If the plant reads the same top to bottom, or rot or pollen is a risk, harvest everything at once. *Grower practice*.

## Why

Buds on one plant ripen unevenly. [Trichome](https://genetixbay.com/knowledge/glossary/trichome.md) maturation varies with [genotype](https://genetixbay.com/knowledge/glossary/genotype.md) and plant age, and heads on the same [bract](https://genetixbay.com/knowledge/glossary/bract.md) sit at mixed stages [1]. Top colas in full light often run days ahead of shaded lower buds.

The chemistry peaks and plateaus. [Cannabinoid](https://genetixbay.com/knowledge/glossary/cannabinoid.md) and [terpene](https://genetixbay.com/knowledge/glossary/terpene.md) content changes through flowering, and peak times differ between plants and [chemotypes](https://genetixbay.com/knowledge/glossary/chemotype.md) [2]. A short wait for the lower buds lets them reach their own plateau.

Waiting costs something too. [Botrytis](https://genetixbay.com/knowledge/glossary/botrytis.md) risk rises as flowers age, and dense colas left in a humid room are the usual victims [3]. A [staggered harvest](https://genetixbay.com/knowledge/glossary/perpetual-harvest.md) only works when the room stays dry.

## The numbers

| Item | Typical |
|---|---|
| Top vs lower ripeness gap | Several days on untrained, tall plants |
| Extra time for lower buds | About 5–10 days (grower practice) |
| [RH](https://genetixbay.com/knowledge/glossary/relative-humidity.md) while lower buds finish | 40–50% |
| Harvest-mix target | Mostly cloudy, about 5–20% amber |
| Feed in the final days | Stage strength, with nitrogen tapered; no [flush](https://genetixbay.com/knowledge/glossary/flushing.md) |

## What to do

1. Score trichomes at the top, middle and bottom of the plant.
2. If the tops are ready and the lower buds are mostly clear, cut the tops cleanly with sanitised pruners.
3. Keep the light schedule, feeding and airflow as they were. Don't flush and don't give a dark period: both are *Myths* that cost resin.
4. Re-check the lower buds every 2–3 days, and pry open dense ones for rot.
5. Harvest the rest when it reaches your mix, and dry each batch separately.
6. Next run, train for an [even canopy](https://genetixbay.com/knowledge/glossary/even-canopy.md) so everything ripens together.

## Common mistakes

- Waiting weeks for larf that will never fill out.
- Letting room humidity climb while the lower buds finish.
- Flushing the plant between the two cuts.
- Mixing wet and part-dried batches in one dry space.

## Related

- Full article: [Trichome ripeness](https://genetixbay.com/knowledge/harvest-cure/trichome-ripeness.md)
- Answers: [how to check trichomes](https://genetixbay.com/knowledge/answers/how-to-check-trichomes.md) · [too early or too late](https://genetixbay.com/knowledge/answers/harvesting-too-early-or-late.md) · [when to stop feeding](https://genetixbay.com/knowledge/answers/when-to-stop-feeding-before-harvest.md)
- Article: [drying](https://genetixbay.com/knowledge/harvest-cure/drying.md)
- Terms: [harvest window](https://genetixbay.com/knowledge/glossary/harvest-window.md) · [larf](https://genetixbay.com/knowledge/glossary/larf.md)

## Follow-up questions

**Do lower buds get bigger after the top is harvested?** Lower cannabis buds often fill out somewhat after the top colas are harvested, because they get more light and are less shaded, according to grower practice. There is no controlled study measuring the gain. Expect a modest improvement over 5–10 days, not top-cola buds. Keep feeding normally and keep humidity at 40–50% while they finish.

**Is a staggered harvest worth the effort?** A staggered cannabis harvest is worth the effort when the top colas are clearly riper than the lower buds, typically on tall plants or plants without much canopy training. It costs an extra drying session and more handling. For an even, trained canopy such as a SCROG, where trichomes read the same top to bottom, harvesting once is simpler.

**Does cutting the top stress the rest of the plant?** Cutting the top colas does stress a cannabis plant a little, but in the last days of flower that rarely matters. Use clean, sharp pruners, cut cleanly, and keep feeding, watering and the light schedule unchanged. Watch the open cuts and the dense lower buds for rot, and keep air moving under the canopy.

## Sources

1. Punja ZK, Sutton DB, Kim T, 2023. Glandular trichome development, morphology, and maturation are influenced by plant age and genotype in high THC-containing cannabis (Cannabis sativa L.) inflorescences. Journal of Cannabis Research 5:12. https://doi.org/10.1186/s42238-023-00178-9
2. Aizpurua-Olaizola O, Soydaner U, Öztürk E, et al., 2016. Evolution of the cannabinoid and terpene content during the growth of Cannabis sativa plants from different chemotypes. Journal of Natural Products 79(2):324–331. https://pubmed.ncbi.nlm.nih.gov/26836472/
3. PNW Plant Disease Management Handbook. Hemp (Cannabis sativa) - Gray Mold (Botrytis Bud Blight and Stem Canker). https://pnwhandbooks.org/plantdisease/host-disease/hemp-cannabis-sativa-gray-mold-botrytis-bud-blight-stem-canker