[MC-225850] Grass, tall grass, flower, double flower, fern, large fern and tree can generate on sand or gravel

Grass, tall grass, flower, double flower, fern, large fern and tree can generate on sand or gravel.

Reproduction:

Grass:
Seed: 552496797037486679
Coordinates: /tp @s -402 68 454

Tall grass:
Seed: 552496797037486679
Coordinates: /tp @s -1512 65 -54


Fern:
Seed: 552496797037486679
Coordinates: /tp @s -525 64 -141

Large fern
Seed: 552496797037486679
Coordinates: /tp @s -322 65 562

Flower
Seed: 552496797037486679
Coordinates: /tp @s 49 65 446

Double flower
Seed: 552496797037486679
Coordinates: /tp @s -1912 65 712

Tree
Seed: 552496797037486679
Coordinates: /tp @s -44 64 454