MSP-Roadmap Rare Plant IMG Survey Calendar. Suggested monitoring timeframe for each species, although note that phenology can change annually depending on environ It is recommended that monitoring entities check on phenological status during the season to determine timing of flowering and share information with others so surveys are con Acanthomintha ilicifolia San Diego thornmint End of March-Early Apr Apr - Jun May Acmispon prostratus Nuttall's acmispon March-May May Mar - Jun Agave shawii var shawii Shaw's agave Year-Round Sep-May Not necessary to monitor during flowering. Ambrosia pumila San Diego ambrosia April-June Apr - May Apr - Oct Aphanisma blitoides Aphansima March-June Mar-Jun Baccharis vanessae Encinitas baccharis April-May inland, Aug - Nov Phenology varies widely, should check Sept-Oct coastal periodically for blooming to avoid missing flowering period. Bloomeria clevelandii San Diego goldenstar May Mar - Apr Apr - May Brodiaea filifolia Thread-leaved brodiaea May Apr Mar - Jun Brodiaea orcuttii Orcutt's brodiaea May Apr May - Jul Brodiaea santarosae Santa Rosa brodiaea May May-Jun Chloropyron maritimum ssp. Salt marsh birds-beak May-June May - Oct maritimum Chorizanthe orcuttiana Orcutt's spineflower March-May Mar - May Clinopodium chandleri San Miguel savory April Mar - Jul Deinandra conjugens Otay tarplant Late April-June Dicranostegia orcuttiana Orcutt's birds-beak April-May May Apr - Jul Dudleya blochmaniae Blochmann's dudleya April Mar - Apr Dudleya brevifolia Short-leaved dudleya April Apr Apr - May Dudleya variegata Variegated dudleya May Apr - May Apr - Jun Dudleya viscida Sticky dudleya May-June May - Jun Erysimum ammophilum Coast wallflower April Apr Feb - Jun Fremontodendron mexicanum Mexican flannelbush Year-Round Mar - Jun Not necessary to monitor during flowering. Hazardia orcuttii Orcutt's hazardia Year-Round Aug - Oct Not necessary to monitor during flowering. Lepechinia cardiophylla Heart-leaved pitcher sage June Apr-Jul Monardella stoneana Jennifer's monardella May-June May Jun - Sep Monardella viminea Willowy monardella April-June Apr - May Jun - Aug Nolina cismontana Chaparral nolina Year-Round May - Jul Not necessary to monitor during flowering. Nolina interrata Dehesa nolina Year-Round Jun - Jul Not necessary to monitor during flowering. Packera ganderi Gander's ragwort April-May Apr - Jun Rosa minutifolia Small-leaved rose May May Jan - Jun Tetracoccus dioicus Parry's tetracoccus April-May Apr - May