Cotton Seed

What is Cotton?

Cotton is a rare, passive-cadence permanent seed in the field family. One owned copy supports one simultaneous planting. Harvesting returns that copy to availability; it does not consume the seed.

Property	Value
Rarity	Rare
Acquisition	66,000 Farm Coins
Base growing time	6h
Base HP per produce	1,881
Base HP/hour per plot	313.5
Weather affinity	Clear Skies (+15%)
Generation	1
Seed level cap	10
Mastery cap	20
Season	Not restricted to a named Harvest Pass

Planting and harvesting explains available seed copies, timers and freshness. Seed upgrades and Crop Mastery are separate systems.

Where to get it

Buy additional copies in the Farm Coin Shop. Find Cotton in the seed list (use its name or rarity filter), then choose Buy copy and confirm. One permanent copy costs 66,000 Farm Coins. Buying a copy is different from paying to upgrade its level.

Once acquired, look for this seed on Seeds or in an empty plot’s planting menu. If all copies are planted, wait for a harvest or obtain another copy; produce in the Barn is not a seed copy. All item sources explains the different shops and reward routes.

Seed levels and exact upgrade prices

“Cost to reach” is the one-step purchase from the preceding level; Level 1 is the starting state. Cumulative cost excludes buying the seed. HP/hour assumes instant replanting, one produce per harvest, no mastery, no matching weather, and no building or companion effects. The farm-level requirement applies to purchasing that level.

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All ten Cotton seed levels
Level	Cost to reach (coins)	Cumulative coins	HP each	Growing time	HP/hour	Farm level required
1	0	0	1,881	6h	313.5	1
2	2,000	2,000	1,993	5h 52m 48s	338.9456	1
3	2,800	4,800	2,106	5h 45m 36s	365.625	2
4	3,920	8,720	2,219	5h 38m 24s	393.4397	3
5	5,490	14,210	2,332	5h 31m 12s	422.4638	4
6	7,690	21,900	2,445	5h 24m	452.7778	5
7	10,760	32,660	2,558	5h 16m 48s	484.4697	6
8	15,060	47,720	2,671	5h 9m 36s	517.6357	7
9	21,090	68,810	2,783	5h 2m 24s	552.1825	8
10	29,520	98,330	2,896	4h 55m 12s	588.6179	9

Mastery requirements and points

These are raw harvest-equivalent requirements without Greenhouse, Supplier or companion progress. Mastery adds points from the seed’s original base HP, not from the upgraded level value. The percentage column describes that original base; integer rounding can make the exact points slightly higher.

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Mastery thresholds for Cotton
Mastery level	Additional progress	Total progress	Added HP each	Base-point bonus
0	0	0	0	0%
1	4	4	38	2%
2	6	10	76	4%
3	9	19	113	6%
4	14	33	151	8%
5	20	53	189	10%
6	30	83	226	12%
7	46	129	264	14%
8	68	197	301	16%
9	103	300	339	18%
10	154	454	377	20%
11	231	685	414	22%
12	346	1,031	452	24%
13	519	1,550	490	26%
14	778	2,328	527	28%
15	1,168	3,496	565	30%
16	1,752	5,248	602	32%
17	2,627	7,875	640	34%
18	3,941	11,816	678	36%
19	5,912	17,728	715	38%
20	8,867	26,595	753	40%

A clearly defined maximum-seed example

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Scenario	HP each	Time	HP/hour
Level 10, Mastery 20, matching weather; no buildings/companions, Level 1 plot	4,196	4h 55m 12s	852.8455

This is not the maximum possible farm output. Plot yield, pond reductions, Windmill strength, active companions, late harvesting, fertilizer and downtime change actual results. Harvest Point calculations explains the rounding and order of operations.

Common questions

Why is inventory worth less than the seed card? An older crop retains its planting-time stats and can lose value if harvested after its Perfect Harvest window. Inventory shows its recorded HP per item. A new seed upgrade does not retroactively alter an already growing crop.

Does a higher-yield plot give extra seed copies? No. It gives extra produce. One crop harvest still advances base mastery once, regardless of how many produce items it yields.