SimGuruGrant has stated on Twitter that the gardening improvements with The Sims 4 Seasons will be given to all players, even those who don’t buy Seasons. The inclusion of glass roofs (to make hot houses) is also pretty exciting.
We're releasing glass roofs and we have overhauled the gardening system for free, which you guys will get before the pack goes live. In fact, there have been free features with every expansion. https://t.co/fhULImxYSQ
— Grant Rodiek (@SimGuruGrant) June 6, 2018