Delphinium elatum (S)
Hardy in Zones 3-7
Plant with crowns just under soil surface, 24" apart. Delphiniums prefer a fertile, deeply prepared, well drained soil and full sun. Remove the first flower shoot as it fades to obtain late season bloom. Regular watering and fertilizing is needed. Apply no fertilizer after August. Stake the spikes before the flowers open to prevent injury whil the spikes are elongating. Only well-grown plants are long lived. Poor soil conditions result in inferior plants. A check in growth, early in the season, causes widely spaced florets on the spikes.
