So you want to decide if your Sim has a baby boy or girl, but at last the season is not right and you must wait ages for either Strawberries or Carrots to grow. Well worry no more LOL. A room that will give you 40 delicious Strawberries and 40 crunchy carrots. Eat away on which ever one you wish too ;) Eat either strawberries for girls or carrots for boys during your sim's whole pregnancy to increase the chance of that gender.
ps. If you have seasons installed then some of the plants that are out of season might revert to little dirt piles as you place the room, to fix that is easy. You just need to activate the testingcheats option by pressing control/shift/c on your keyboard to open the cheatwindow. Type testingcheats true in there. Once the testingcheats is activated then you can shift click on your little dirt pile in live mode. Select set gadening state and then select growth stage and then lastly select blossoming. Your plant will then be fully grown and ready to harvest ;) You can do this with any of your harvestable plants in game.