plum tree trees blossom at the ending of wintertime and in former natural spring , unremarkably between mid - March and mid - April . A strong bloom is the first step in the tree produce a large harvest of fruit , and many factor affect the timing and survival of prime on plum tree trees , including the plum tree species and change , local weather condition weather , and how well the tree is cared for .
Types of Plum and Time of Blooming
The two main groups of plums grown commercially and in backyard orchards are the European and Japanese cultivars . In world-wide , Japanese varieties bloom andset fruitslightly earlier than European cultivar and have lower chill - hr requirements .
Many varieties of both plum tree types need a pollinator plum tree tree diagram of a unlike variety for successful pollination of flower . When bloom are pollinated , fruit - set happens and mature yield is quick for pluck in an norm of 140 to 170 days after bloom .
Chill Hours and Blooming
plum tree trees will not flower at the right time unless they have the correct issue of frisson hour below 45ºF ( 7.7ºC ) . Chill time of day requirement for plum tree diagram deviate by motley and are as grim as 150 hours for some Japanese cultivars and up to 1,000 hours for some European miscellany .
When Tree do not receive the correct number of chill hour , heyday do not appear at the correct fourth dimension and fruit product is decreased .
Pollination of Plum Blossoms
In some variety of plum , flowerscontain both male and distaff generative structures , and these type are called ego - rich . Self - productive varieties self - pollinate and can provide pollen to any other plum tree which necessitate cross - pollenation from a different potpourri .
Some popular ego - fruitful , Japanese motley are :
Some common self - fruitful types of European plum are :
More eccentric of European plums are self - fruitful than Japanese , however , many plum tree varieties are of both types are ego - unfruitful , needing a pollinator Sir Herbert Beerbohm Tree of a dissimilar variety within 50 feet ( 15 meters ) to provide pollen .
In Holy Order for one tree to cross-pollinate another , both must bloom at the same time and the varieties must be compatible . Consult with your local Agricultural Department or the nursery where you bribe the trees to find varieties for planting that are compatible for crossbreeding - pollenation and are unfearing in your locale .
Fruiting of Plum Trees
The earliest character of plum ripen in about 80 sidereal day after flower , but most are ready for pick in 140 to 170 days . The late diversity reach ripeness at roughly 210 day after blossom . The span of plum harvest time dates range from mid - May to early October .
Mature plumsdevelop a fragile , dusty finish send for ‘ wax bloom ’ when they are fully ripe . This finishing can be wiped off or it will simple get rubbed away as the fruit is handled .
