LONG ISLAND IMPROVED Brussel Sprouts seeds - HEIRLOOM Heavy producer of sets - FREEZES WELL - 90 - 100 DAYS (00250 Seeds - 250 Seeds - Pkt. Size) LONG ISLAND IMPROVED Brussel Sprouts seeds HEIRLOOM Heavy producer of sets FREEZES WELL 90 - 100 DAYS LONG ISLAND IMPROVED BRUSSEL SPROUTS 90-100 days. This popular heirloom variety has been around since the 1890s. Plants are compact and semi-upright reaching 24". Heavy producer of sets of 50-100 decent sized 1 1/2" diameter firm sprouts over an extended season. Freezes well.