All the answers are flowers or plants. For example.... Industrious Queen (4,6) Busy Lizzie 1. Evergreen drink 9 letters 2. The universe as an ordered whole 6 3. Nervous excitement in a small group. 8 4. Just not enough hours in the day. 5 5. What Richard has to put up with. 8 6. It's been handed down to us. 6,5 7. Sweet grass. 9 8. Goes well with trifle. 9 9. Curse the bird. 6 10. Favourite food of Mrs Bucket. 5,8 11. To remind us. 7 12. Low cost rarity. 4,4,6 13. He is such a good boy. 5,7 14. Make the 'teat' sweet. 11 15. Something to look over. 4,4,6 16. Moving slowly on the spinning wheel. 8,5 17. Romeo and Juliet? 4,4 & 8
Thanks very much to FoxLee, mazie, bridgenut and jadzia49. The only one I am now missing is what Richard has to put up with. 8 letters.
Maybe Quizmonkey would like to contribute now that only 1 answer is needed. At least I put them all in the same question, rather than a separate one for each flower!