Greenhouse building to allow for passive auto-harvested crops. Purchasable on the farm and each plot can be loaded with seeds to automatically plant and harvest those seeds. In order to not be too powerful, starts with 1 row of crops (4 plots) and can be upgraded with a scaling gold cost similar to craftworks to obtain 1 more row per upgrade. If the gold scaling is right, it wouldn't be too strong of a building but would allow for a nice gold sink and more passive farming. 12 upgrades would be essentially equivalent to the tower 10 artifact that doubles crop growing speed (if you are at the 1T crop row purchased).
If there are concerns on the building being too AFK, could require each slot to use multiple seeds per crop planted to require purchasing seeds more often and/or reduced passive silver income, or require you to check in to "water" your crops so often to keep them growing.
Comments
Perhaps a greenhouse where you can start growing plants "seedling" to be planted out into the field @ a reduced duration until ready for harvest. For instance, Crops with base time 5-20 mins, 20-60min, 60min - (x) hrs become "seedlings" that when planted in the farm "field" can be harvested @ reduced time or expand on 'instantly' w/ breakfast boost meal.
For example, Hops w/ 20min base time, 2 min with perks when grown in farm. Plant hops seeds in greenhouse for (x) time, after which they become Hops seedlings & require say, 8-10mins base time or 45-60s with perks & also become eligible for instant harvest with breakfast boost meal. For Rice "seedlings" - perhaps 144 hrs base time, 16 hrs with perks.. Greenhouse requirement lvl ( x > 95 ), req. mfg fertilizer like 'feed mill, flour mill' ?
Could be redundant but could also add a lot of depth and opportunity for future developments ie. community market square for trading, collaborating @ say tower x > 150.
