10 
Ferndale Nursery—Askov, Minnesota 
1939 
Hardy Fern Varieties 
Letters preceding common name of fern indicates adapt¬ 
ability of variety to growing conditions. R—adapted for rock 
garden; B—for bog or wet location; S—for shady places; O—open 
sunny location. Varieties well adapted for foundation plantings 
are so indicated. 
GROUP 1 
RS—AMERICAN MAIDENHAIR—Foundation. 
10 100 
Adiantum pedatum, 8—12 in. _ $0.80 $ 6.00 
S—CHRISTMAS FERN— 
Polystichum acrosticoides, 12—30 in. _ 1.00 8.00 
SB—CINNAMON FERN— 
Osmundo cinnamomea, 2—4 ft. _ 1.00 8.00 
S—CLINTON WOOD FERN—Moist Locations 
Dryopteris clintoniana, 1—2 ft. _ 1.00 8.00 
SB—CRESTED WOOD FERN— 
Dryopteris cristata, 10—15 in._ 1.00 8.00 
RO—HAYSCENTED FERN—foundation 
Dennstedtia punctiloba, 12—18 in. _ 1.00 8.00 
RO—INTERRUPTED FERN—Foundation 
Osmundo claytoniana, 2—4 ft. _ 1.00 8.00 
RS—LADY FERN—Foundation 
Athyrium felix faemina, 1—3 ft. _ .80 6.00 
LEATHERY WOOD FERN—Foundation 
Dryopteris marginale, 12—30 in. _ 1.00 8.00 
B—MARSH FERN— 
Dryopteris thelepteris, 6—12 in. _ 1.00 8.00 
RS—OSTRICH FERN—Foundation 
Pteris nodulosa, 2—4 ft._ .80 6.00 
RO—POLYPODIUM COMMON— 
Polypodium vulgare, 4—6 in. _ .80 6.00 
SB—ROYAL FERN— 
Osmundo regaiis, 2—3 ft. _ 1.20 10.00 
RB—SENSITIVE FERN—Foundation 
Onoclea sensibilis, 6—18 in._ 1.00 8.00 
B—TOOTHED WOOD FERN— 
Dryopteris spinulosa, 1—3 ft. _ 1.00 8.00 
SRB—WINGED WOOD FERN— 
Dryopteris hexagonopteris; 2—4 in. _ .80 6.00 
GROUP 2 
10 * Each 
RS—BRITTLE BLADDER FERN— 
Cystopteris bulbifera, 4—6 in. _ 2.00 .25 
RS—MAIDENHAR SPLEENWORT— 
Asplenium tricomanus, 2—4 in. _ 2.50 .30 
R—RUSTY WOODSIA— 
Woodsia ilvensis, 2—5 in. _ 2.50 .30 
RO—COMMON WOODSIA— 
Woodsia obtusa, 2—8 in. _ 2.00 .25 
R—GRAPE FERN— 
Botrychum obliqum_ 2.00 .25 
RS—BEECH FERN— 
Phegopteris hexagonopteris, 8—12 in._ 2.00 .25 
RS—SILVERY SPLEENWORT— 
- 1.50 .20 
Numerals following botanical name indicate heights which 
plant may be expected to attain, depending on soil and culture. 
