If you're willing to expand your Farm a bit then I find I like to make a few patches of the most profitable single harvest Crops:
Spring: Rhubarb or Cauliflower
Summer: Starfruit or Red Cabbage
Fall: Pumpkin
Planted with Deluxe Speed Gro and in 24-count patches, each watered with one Iridium Sprinkler. Doesn't have to be too big as I usually have maybe 6? of these. Some people prefer Ancient Fruit but the annoyance of grinding up some for Seeds every year bothers me. Then Keg or Preserve Jar them, it's 3 mornings of work each month for a nice profit. Other people prefer to plant fast crops like Coffee and Wheat, or multiple-harvest crops like Blueberry and Cranberry. But all of those require more work for Harvesting and Keg/Jarring to realize their somewhat better profits and that's wayyy beyond my personal limit for effort. I barely tolerate those patches of 6 x 24.
When you get your Greenhouse done, you could plant some Fruit Trees inside around the perimeter and Ancient Fruit in the center and you'll get Fruit and Crops year round, even in Winter and never have to replant or seed anything. It's heaven. For color and to feel like a super-actual Farmerperson, I'll add in one each of the perpetual-harvest Crops in the Greenhouse as well:
Strawberry
Green Bean
Blueberry
Corn
Hops
Hot Pepper
Tomato
Cranberries
Eggplant
Grape
Cactus??!? This grows in soil in the Greenhouse?? I've been growing it in the Farmhouse in Pots forever. I've even planted Cactus in Pots in the GREENHOUSE!^@^&%#&^
I've been playing this game for years and just found this out!
But sometimes I tire of even those 10 individual Crops in there and just till 'em under and go monoculture Ancient Fruit. I need everything to be siiiiimple! Easy. Something I can do in my sleep as that's usually what I'm doing anyway. It important to know your limitations and go with those strengths. I can't tell you how sad I get when I see people get stressed about this game because they have to do this or that and don't have enough time. Meh, it can allllll wait, this game is just chock full of time. Take it eeeeasy!
And you know this. You Farm has spoken to me as it understands the softly spoken language of the pastoral idyll Ancient Forest.