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Can plants die from excessive heat? Need some advice pls

Its supposed to be 97+ degrees for the next 7-10 days with no rain in the forecast, and wondering if all my plants will just fry to death. Especially newly planted ones. I've planted new plants this year from the beginning of April to early June. I put all my potted plants in the shade under my trees and bamboo, even the shade haters like my potted spruce and citrus. They are staying there until it gets lower than 90 degrees. Don't care how much sun they like.

2018 planted perennials/transplanted perennials in full sun and part sun include: Filipendula yezoensis, achillea sibirica var. camtschatica, sedum rupifragum, convallaria keiskei, miscanthus sinensis 'adagio', epimedium grandiflorum 'yubae', liriope muscari, polygonatum odoratum 'variegatum'. Are any of these at risk in dying from the excessive heat? Also, will cool climate growing plants such as my tsuga diversifolia and picea jezoensis be able to survive this heat? Any advice on how to deal with this situation.. buy umbrellas and stands and cover them all up? Water them every single day for the next 7-10 days? Oscillating sprinkler on for 24 hours?

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