Time after which planets reach the pebble isolation mass t_iso ≡ t(M=M_iso), as a function of orbital radius and initial mass, using IGM16. White indicates the isolation mass has not been reached. The contours showing the final mass are the same as in Fig. 4. Around 0.49, 0.70, and 1.00 M_⊙ stars, the first planets reach M_iso within the first 50 000 to 100 000 years of the simulation, which could halt pebble accretion for planets close to the star prematurely.