Sunflower Seed

What is Sunflower?

Sunflower is a uncommon, passive-cadence permanent seed in the flower 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	11,000 Farm Coins
Base growing time	6h
Base HP per produce	1,140
Base HP/hour per plot	190
Weather affinity	Heat Wave (+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 Sunflower in the seed list (use its name or rarity filter), then choose Buy copy and confirm. One permanent copy costs 11,000 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 Sunflower seed levels
Level	Cost to reach (coins)	Cumulative coins	HP each	Growing time	HP/hour	Farm level required
1	0	0	1,140	6h	190	1
2	500	500	1,208	5h 52m 48s	205.4422	1
3	700	1,200	1,276	5h 45m 36s	221.5278	2
4	980	2,180	1,345	5h 38m 24s	238.4752	3
5	1,380	3,560	1,413	5h 31m 12s	255.9783	4
6	1,930	5,490	1,482	5h 24m	274.4444	5
7	2,690	8,180	1,550	5h 16m 48s	293.5606	6
8	3,770	11,950	1,618	5h 9m 36s	313.5659	7
9	5,280	17,230	1,687	5h 2m 24s	334.7222	8
10	7,380	24,610	1,755	4h 55m 12s	356.7073	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 Sunflower
Mastery level	Additional progress	Total progress	Added HP each	Base-point bonus
0	0	0	0	0%
1	4	4	23	2%
2	6	10	46	4%
3	9	19	69	6%
4	14	33	92	8%
5	20	53	114	10%
6	30	83	137	12%
7	46	129	160	14%
8	68	197	183	16%
9	103	300	206	18%
10	154	454	228	20%
11	231	685	251	22%
12	346	1,031	274	24%
13	519	1,550	297	26%
14	778	2,328	320	28%
15	1,168	3,496	342	30%
16	1,752	5,248	365	32%
17	2,627	7,875	388	34%
18	3,941	11,816	411	36%
19	5,912	17,728	434	38%
20	8,867	26,595	456	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	2,653	4h 55m 12s	539.2276

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.