I'm having quite good luck "naturalizing" crocus with a little bit of seed-assistance. Most years, a large bounty of seed is produced on the beautiful C. angustifolius (golden yellow, brown-striped on the outside), the capsules produces on stalks above ground making them easy to notice and harvest. Various forms of the exquisite C. malyi similarly produces lots of seed, as do the many named cultivars of C. chrysanthus (the latter, one needs to looks just at or below ground level). By "seed-assistance", I refer to the annual practice of gathering the seed, then sowing the seed "in situ" in various parts of the garden, just scratching them in. I've always had miserable results sowing Crocus in small pots, but harvesting the seed of Crocus and many other plants and scratching them directly into the ground has given results far better than I ever imagined... a lazy man's dream come true. It's still early in the season here, just a few crocus species starting to bloom, then set back with the return of snow and cold weather, but here's a look at some Crocus blooming a couple days ago. It's really fun with the C. chysanthus seedlings, as they hybridize readily, with all sorts of interesting color combinations and forms. NARGS Forum links, click any image to enlarge it. http://nargs.org/smf/index.php/… http://nargs.org/smf/index.php/… PS: in spite of the topic title, none of these crocusy delights are "weedy" in the customary sense ;-) Mark McDonough antennaria@charter.net Massachusetts, USA, USDA Zone 5