| Lady Fern |
| Lamiastrum gal. ‘Hermans Pride’ |
| Lamium mac. ‘Anne Greenway’ |
| Lamium mac. ‘Beacon Silver’ |
| Lamium mac. ‘Red Nancy’ |
| Lamium mac. ‘Shell Pink’ |
| Lamium mac. ‘White Nancy’ |
| Lamium ‘Purple Dragon’ |
| Lavender angustifolia (Vera) |
| Lavender int. ‘Provence’ |
| Leptinella gruveri |
| Leptinella ‘Platt’s Black’ |
| Leptinella squalida |
| Leucanthemum sup. ‘Aglaia’ |
| Leucanthemum sup. ‘Becky’ |
| Leucanthemum sup. ‘Snow Cap’ |
| Lewisia ‘Sunset Strain’ |
| Liatris spi. ‘Floristan Weiss’ |
| Liatris spi. ‘Kobold’ |
| Ligularia den. ‘Britt-Marie Crawford’ PPAF |
| Ligularia ste. ‘Little Rocket’ |
| Lilium asi. ‘Tiny Bee’ (yellow) |
| Lilium asi. ‘Tiny Dino’ (orange) |
| Lilium asi. ‘Tiny Ghost’ (purple) |
| Lilium asi. ‘Tiny Hope’ (red) |
| Lilium asi. ‘Tiny Nanny’ (white) |
| Lilium asi. ‘Tiny Todd’ (pink) |
| Lilium ori. ‘After Eight’ (Magenta) |
| Lilium ori. ‘Free Choice’ (White) |
| Lilium ori. ‘Rosy Dimple’ (Pink) |
| Liriope mus. ‘Big Blue’ |
| Liriope mus. ‘Majestic’ |
| Liriope mus. ‘Monroe White’ |
| Liriope mus. ‘Royal Purple’ |
| Liriope mus. ‘Variegata’ |
| Liriope spi. ‘Silver Dragon’ |
| Liriope spicata |
| Lithodora dif. ‘Grace Ward’ |
| Lobelia car. ‘Fried Green Tomatoes’ |
| Lobelia cardinalis |
| Lobelia ful. ‘Queen Victoria’ |
| Lobelia ‘Grape Knee-Hi’ |
| Lotus cor. ‘Pleniflorus’ |
| Lupine ‘Minarette’ |
| Lupine ‘Woodfield Hybrids’ |
| Lupinus nootkatensis |
| Lychnis ‘Rolly’s Favorite’ |
| Lysimachia j. var. minutissima |
| Lysimachia num. ‘Aurea’ |
| Maidenhair Fern |
| Malva alc. ‘Fastigiata’ |
| Malva syl. ‘Zebrina’ |
| Mazus rep. ‘Albus’ |
| Mazus reptans |
| Meehania cordata |
| Mentha requienii |
| Mertensia virginica |
| Miscanthus sin. ‘Adagio’ |
| Miscanthus sin. ‘Cosmopolitan’ |
| Miscanthus sin. ‘Dixieland’ |
| Miscanthus sin. ‘Gold Bar’ |
| Miscanthus sin. ‘Gracillimus’ |
| Miscanthus sin. ‘Little Kitten’ |
| Miscanthus sin. ‘Little Zebra’ |
| Miscanthus sin. ‘Morning Light’ |
| Miscanthus sin. ‘Variegatus’ |
| Miscanthus sin. ‘Zebrinus’ |
| Monarda did. ‘Coral Reef’ |
| Monarda ‘Jacob Cline’ |
| Monarda ‘Marshalls Delight’ |
| Monarda ‘Petite Delight’ |
| Monarda ‘Raspberry Wine’ |
| Muhlenbergia capillaris |
| Nepeta sub. ‘Sweet Dreams’ |
| Nepeta x faa. ‘Six Hills Giant’ |
| Nepeta x faa. ‘Walkers Low’ |
| Nipponanthemum nipponicum |
| Oenothera ber. ‘Siskiyou’ |
| Ophiopogon jap. ‘Nana’ |
| Ophiopogon japonicus |
| Ophiopogon pla. ‘Ebony Night’ |
| Ophiopogon pla. niger |
| Origanum vul. ‘Aureum’ (Golden Oregano) |
