Potato Seed

What is Potato?

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

Property	Value
Rarity	Common
Acquisition	1,200 Farm Coins
Base growing time	4h
Base HP per produce	456
Base HP/hour per plot	114
Weather affinity	Cool Front (+20%)
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 Potato in the seed list (use its name or rarity filter), then choose Buy copy and confirm. One permanent copy costs 1,200 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 Potato seed levels
Level	Cost to reach (coins)	Cumulative coins	HP each	Growing time	HP/hour	Farm level required
1	0	0	456	4h	114	1
2	100	100	483	3h 55m 12s	123.2143	1
3	140	240	510	3h 50m 24s	132.8125	2
4	200	440	538	3h 45m 36s	143.0851	3
5	280	720	565	3h 40m 48s	153.5326	4
6	390	1,110	592	3h 36m	164.4444	5
7	540	1,650	620	3h 31m 12s	176.1364	6
8	760	2,410	647	3h 26m 24s	188.0814	7
9	1,060	3,470	674	3h 21m 36s	200.5952	8
10	1,480	4,950	702	3h 16m 48s	214.0244	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 Potato
Mastery level	Additional progress	Total progress	Added HP each	Base-point bonus
0	0	0	0	0%
1	4	4	10	2%
2	6	10	19	4%
3	9	19	28	6%
4	14	33	37	8%
5	20	53	46	10%
6	30	83	55	12%
7	46	129	64	14%
8	68	197	73	16%
9	103	300	83	18%
10	154	454	92	20%
11	231	685	101	22%
12	346	1,031	110	24%
13	519	1,550	119	26%
14	778	2,328	128	28%
15	1,168	3,496	137	30%
16	1,752	5,248	146	32%
17	2,627	7,875	156	34%
18	3,941	11,816	165	36%
19	5,912	17,728	174	38%
20	8,867	26,595	183	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	1,062	3h 16m 48s	323.7805

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.