Garudapurana 1.34.21

1.34.21

sattvaṃ rajastamaścaiva madhyadeśe 'tha pūjayet /
kandaṃ nālaṃ ca padmaṃ ca madhye caiva prapūjayet //

Then, in the central region, one should worship sattva, rajas, and tamas; / and in the centre one should also worship the root-bulb, the stalk, and the lotus.