| | Plattdeutscher Name | Deutscher Name | Englischer Name | Botanischer Name | | Iaersellappen (Soest/Westfalen) | Pestwurz, Gewoehnliche | Butterbur + Umbrella Plant | Petasites hybridus |
| Ibbern (Angeln) | Ulme, Flatter | Elm, Russian | Ulmus laevis |
| Ibenbaum (Mecklenburg) | Ulme, Flatter | Elm, Russian | Ulmus laevis |
| Ieper (Holstein) | Ulme, Flatter | Elm, Russian | Ulmus laevis |
| Iepernboom (Holstein) | Ulme, Flatter | Elm, Russian | Ulmus laevis |
| Ierdbeer (Holstein+Mecklenburg) | Erdbeere, Wald- | Strawberry, Alpine | Fragaria vesca |
| Iesbloom | Fetthenne, Grosse | Stonecrop, Great | Sedum telephium subsp. maximum |
| Iesbloom | Mauerpfeffer, Scharfer | Stonecrop | Sedum acre |
| Iesenhart | Weiderich, Blut- | Loosestrife, Purple | Lythrum salicaria |
| Iesenhart | Weiderich, Blut- | Loosestrife, Spiked | Lythrum salicaria |
| Iesenhoot | Eisenhut, Blauer | Monkshood, Garden = Friarīs Cap | Aconitum napellus |
| Iesenhoot (Schleswig-Holstein) | Eisenhut, Blauer | Friarīs Cap | Aconitum napellus |
| Iesenkruut | Eisenkraut, Echtes | Simpler`s Joy | Verbena officinalis |
| Iesenkruut | Eisenkraut, Echtes | Grass, Turkey | Verbena officinalis |
| Iesernkruut | Eisenkraut, Echtes | Simpler`s Joy | Verbena officinalis |
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