A onda nije razlog sunce i naglo podizanje temperature. Ostaje vlaga, ali ipak kantom su zaštićeni od padalina, a vlagu uslijed hlađenja noću i nagle kondenzacije ipak malo upije suho lišće. Ne znam, ali ne vjerujem da im fali svjetlost, ipak su to palme koje su u svom staništu izložene povremenim jakim hladnim prodorima zimi, tako da su prilagođene da zimi odu u potpuno mirovanje.
Evo jednog teksta o tome,
http://tct.netfirms.com/tropics/coldslct.html :
For example, S.E. Asia experiences moderate temperatures during spring and native plants are used to start growing already at low temperatures. S.E. Asia never experiences late spring freezes because numerous mountains up north protect the area from arctic colds. So, the plants are safe to grow during the spring season.
In the S.E. US, however, spring temperatures heat up fast but because of the lack of northern mountains, there is always the danger of an arctic air mass reaching the Golf of Mexico at this time. Native plants protect themselves by waiting for the real hot summer temperatures before they start growing.
Bottom Line:
Make sure if you experience occasional late spring freezes that you select a species that waits for hotter temperatures to grow (i.e. all Sabal species). HIGH RISK SCENARIO: Planting a Livistona chinensis (China) in Dallas, Texas.
Uglavnom, biljke iz JI SAD-a (poput sabala), navikle na povremene kasne mrazeve u tom kraju, čekaju stvarno toplo vrijeme da počnu s rastom. Za razliku od njih, livistona, koja dolazi iz krajeva u kojem nema kasnih mrazeva, kreće s rastom s prvim zatopljavanjem, pa je puno osjetljivija na zakašnjele hladnoće.
