Sweet Corn Seed

What is Sweet Corn?

Sweet Corn is a uncommon, balanced-cadence permanent seed in the grain family. One owned copy supports one simultaneous planting. Harvesting returns that copy to availability; it does not consume the seed.

Property	Value
Rarity	Uncommon
Acquisition	6,800 Farm Coins
Base growing time	1h
Base HP per produce	200
Base HP/hour per plot	200
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 Sweet Corn in the seed list (use its name or rarity filter), then choose Buy copy and confirm. One permanent copy costs 6,800 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 Sweet Corn seed levels
Level	Cost to reach (coins)	Cumulative coins	HP each	Growing time	HP/hour	Farm level required
1	0	0	200	1h	200	1
2	500	500	212	58m 48s	216.3265	1
3	700	1,200	224	57m 36s	233.3333	2
4	980	2,180	236	56m 24s	251.0638	3
5	1,380	3,560	248	55m 12s	269.5652	4
6	1,930	5,490	260	54m	288.8889	5
7	2,690	8,180	272	52m 48s	309.0909	6
8	3,770	11,950	284	51m 36s	330.2326	7
9	5,280	17,230	296	50m 24s	352.381	8
10	7,380	24,610	308	49m 12s	375.6098	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 Sweet Corn
Mastery level	Additional progress	Total progress	Added HP each	Base-point bonus
0	0	0	0	0%
1	8	8	4	2%
2	12	20	8	4%
3	18	38	12	6%
4	27	65	16	8%
5	41	106	20	10%
6	61	167	24	12%
7	91	258	28	14%
8	137	395	32	16%
9	205	600	36	18%
10	308	908	40	20%
11	461	1,369	44	22%
12	692	2,061	48	24%
13	1,038	3,099	52	26%
14	1,557	4,656	56	28%
15	2,335	6,991	60	30%
16	3,503	10,494	64	32%
17	5,255	15,749	68	34%
18	7,882	23,631	72	36%
19	11,823	35,454	76	38%
20	17,735	53,189	80	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	446	49m 12s	543.9024

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.