What words can you find from the list of alphagrams below?  There are 4 each of 4-7 letters, all with at least two anagrams, and at least one of the answers is a flower that grows in gardens in England.

Apologies: some of the anagrams are quite obscure (many are not), and one of the anagrams has 13! answers.

AEGS
EORS
IIRS
ILLY                     

AERST
AILOV
ENOPY
ILPTU

AAILSV
CCORSU
CDHIOR
EILOTV

ABEILST
ACEINOT
AEEFIRS
AEEGSTT

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AEGS                   ages, gaes, SAGE
EORS                   eros, ores, reos, ores, ROSE, sore
IIRS                      IRIS, siri
ILLY                      illy, LILY, yill

AERST                 arets, ASTER, earst, rates, reast, resat, stare, stear, strae, tares, taser, tears, teras
AILOV                  VIOLA, voila
ENOPY                PEONY, poney
ILPTU                   TULIP, uplit

AAILSV                avails, saliva, SALVIA
CCORSU              CROCUS, occurs, succor
CDHIOR              droich, ORCHID, rhodic
EILOTV                olivet, VIOLET

ABEILST              ableist, albites, ASTILBE, bastile, bestial, blastie, libates, stabile
ACEINOT            ACONITE, anoetic
AEEFIRS              arefies, faeries, FREESIA
AEEGSTT             gestate, TAGETES