Posted: 02/08/2014 at 14:14
Hi Jesse - you've certainly nothing to lose by taking it out just now as it's not looking too happy anyway. If your ground's wet and boggy, dig out a decent hole - two or three times the size you had - and fill with decent compost and plenty of grit to aid drainage, and if your lilac's still alive, replant it. Water in and then water only when it needs it - long dry spells -and once it's showing signs of new growth it should be fine. It doesn't look too lively though - it should have put on some good growth by now.
The only thing I'd add is that you have them very close together. Lilacs make big shrubs/small trees, so I'd suggest you leave a much bigger space between them. If it's not survived, you could follow the same advice and plant another one if that's what you'd like.