A.T. Robertson Commentary Matthew 13:5

"and others fell upon the rocky places, where they had not much earth: and straightway they sprang up, because they had no deepness of earth:" — Matthew 13:5 (ASV)

The rocky places (τα πετρωδη). In that limestone country ledges of rock often jut out with thin layers of soil upon the layers of rock.

Straightway they sprang up (ευθεως εξανετειλεν). "Shot up at once" (Moffatt). Double compound (εξ, out of the ground, ανα, up). Ingressive aorist of εξανατελλω.