I've witnessed this bug multiple times in the last few days.

I've got an MFR planter/harvester setup with one section devoted to Sakura saplings. I have confirmed that only sakura saplings are planted there. At no point does a redwood sapling get planted or even enter the planter.

Seemingly at random, a single sakura tree will, rather than grow into a sakura, grow into a full-sized redwood, the same as when a 7x7 of redwood saplings is grown.

This does not require a 7x7 square of sakura saplings, nor does it require a sapling to touch any other sakura saplings at all. It ignores uneven terrain or obstacles to its growth and simply overwrites them with redwood/bark/roots.

I've attempted to prevent redwoods from growing from Sakuras in the following manners:

• Breaking up planting area so that a 7x7 cannot form
• Removing dirt to ensure that sakura saplings are always isolated from other sakura saplings
• Putting up terrain barriers around the saplings so that the ground is not even enough for the redwood to grow.

None of these were successful: in every case, I would eventually come back to discover that a redwood had grown in place of a sakura, sometimes multiple times in the same day. I suspect that this is happening faster than normal redwood growth, as that seems to typically require several days.

When the redwood grows from the sakura sapling, it doesnt appear to take into account its surroundings. I've had its roots pierce into levels of stuff below it several times, ruining automated processes and destroying builds.

I've made an image gallery of the latest time I've seen this happen, which might help to illustrate the problem:

http://imgur.com/03FPekb,g57PpsD,qqlCxxs,bRAVYyj,5pGXdO8,3wITxfM,CSv4QA1#0

Edit: Additionally, here's some screenshots of the MFR Planter thats planting the sakuras and the itemduct filter that's filling it up with saplings, just to illustrate that it really is just receiving and planting sakura saplings.

http://imgur.com/CXkct7T,gxG97zf#0

1.6.4 is no longer supported

Check 1.7.X for the same issue. This bug was written when 1.6.4 was the latest supported version and the problem was never fixed, so it stands to reason that you'll find the same problem in current versions.

are you using MCPC?

In all honesty, I'm not sure if I was using MCPC at the time the issue was in effect. I did at some point convert to MCPC (now Crucible) for the server on which the issue occurred for performance reasons (i.e., spigot's optimizations), but I'm unsure if it was before or after the redwood issue was happening, given that it was a couple months ago. If there are known issues with MCPC, that may have been the cause, in which case you can probably disregard.

On a related note, I did eventually find a workaround to prevent the redwood shenanigans, in case anyone else has the same issue and needs a fix. Building a solid platform above the sakura saplings that is above the maximum height of the sakura trees, but below the minimum height of the redwood trees prevents the redwoods from growing. This is a few months old at this point, so I'd mostly forgotten about it.

In the meantime, or in the case that this isn't going to be fixed, is there a possible workaround to prevent this from happening? Would building a platform above the saplings tall enough for sakura trees to grow under, but too short for redwoods be sufficient to prevent growth? It seems the redwoods dont check for room for their roots, but do they check for obstructions for the trunk?

I've also seen another player on my server chop down a Eucalyptus and get a Redwood sapling from it. Not sure if this could be related, since the planter in the above situation cannot plant redwood saplings, but it might also be something to look into.