Hi Juliana,

Orientals and Asiatic lilies prefer somewhat acidic soil as do most other lilies. But many lilies are tolerant of basic soil (and other non-ideal garden conditions). Most lilies (especially hybrids) are not very fussy plants. An exception to that is Lilium Candidum (the Madonna Lily) which must have basic soil.

The University of Massachusetts has a page on potted hybrid lilies:

"For Asiatic hybrids pH should be maintained at 6.5 and for Oriental hybrids, pH should be 6.5 to 6.8."

As for telling Asiatics and Orientals apart there are a couple recent threads on that topic. When they're not flowering it's tough, but a freshly dug Oriental will have a very distinctive yellow colored bulb.

-Helen

Here is a link that might be useful: Production of Hybrid Lilies as Pot Plants

Thanks, Helen. I'll pass the info along.

Juliana

hi i have purchased 7 white lily plants. i am a 77year old novice and i have ph of 7 for 2 plants, ph of 5-6 for 3 plants and ph4-5 2 plants...which do i need to correct.