Lavandula angustifolia is a promising essential oil and ornamental crop whose distribution in the temperate zone and northern regions is limited by its low winter hardiness. Analyzing the causes of low winter hardiness will facilitate the selection of the most winter-hardy hybrids. The study goal is to evaluate the climatic conditions and winter hardiness of narrow-leaved lavender and to determine critical conditions for the successful overwintering of plants in the conditions of Moscow. The studies were conducted in the laboratory of cultivated plants of MBG RAS from 2015 to 2022. The research objects were 72 lavender hybrids. The assessment of hybrids’ winter hardiness was carried out after complete snow melt. Average daily temperature, snow cover height, and precipitation were considered daily. Data statistical processing was carried out using Microsoft Excel and PAST 4.5 software. Optimal lavender overwintering conditions were formed in 2018 and the greatest plant damage was observed in 2017. The research years were grouped by winter hardiness structured into clusters, which allowed us to identify common features in climatic conditions and to identify critical periods of the winter period leading to a decrease in winter hardiness. Temperature fluctuations in winter, frequent temperature transitions over the 0 °C mark, high levels of snow cover and the formation of ice deposits led to severe damage to some lavender hybrids. Severe frosts in the absence of snow cover can lead to the death of lavender plants in the temperate zone. Lavender hybrids were grouped by winter hardiness into two clusters and 11 subclusters. A group of hybrids with consistently high resistance has been selected throughout the years of the study; these hybrids are the most promising for further hybridization.

Industrial raspberry plantations do not provide the domestic Russian market with products in full. Open-ground raspberries are only available in July, August, and September. These time intervals can be extended by using tunnel shelters and remontant varieties. The aim of this study was to evaluate foreign remontant raspberry varieties for industrial cultivation in the Central Russia region and their potential use in breeding programs to improve domestic varieties. The data was collected from four-year-old plants over three years. The studied varieties—including ‘Amira’, ‘Enrosadira’, ‘Maravilla’, ‘Mapema’, ‘Kwanza’, and ‘Eros’—were grown in film greenhouses. The vegetative and generative parts of the plant were assessed, as well as the characteristics of the fruits. The plants were grown in film tunnels (10 m × 100 m × 4.7 m). Thirty fruits were randomly selected for the study, in which quantitative and qualitative parameters were evaluated. The parameters of the vegetative and generative organs were also measured. According to the study results, based on raspberry fruit quality indicators, four raspberry variety groups were distinguished. The content of soluble solids was highest in the Maravilla variety, amounting to 14.14 ± 0.71 Brix. Based on a set of characteristics, it was established that if agronomic activities including irrigation and basic fertilizer application are observed, the varieties ‘Maravilla’, ‘Enrosadira’, and ‘Mapema’ are promising for use in the central zone of Russia.

Blackberry (Rubus subg. Eubatus Focke) ranks among the four most commercially valuable berry crops globally, alongside raspberry, strawberry, and blueberry, owing to its high antioxidant content—particularly flavonoids, anthocyanins, and polyphenols. Compared to other berry crops, blackberry cultivation requires lower labor and financial inputs, with plantations remaining productive for 12–15 years. In Russia, total blackberry area is limited (~100 ha), and the Moscow Region is particularly suited for trailing and semi-trailing cultivars with early-to-mid-season ripening. This three-year study (2021–2023) conducted at the Tsitsin Main Botanical Garden (RAS) evaluated ten promising blackberry cultivars to (i) assess interrelationships among phenological, morphological, and fruit quality traits; and (ii) identify optimal market niches for each genotype. Cultivars were grouped by ripening time: early (‘Karaka Black’, ‘Loch Tay’, ‘Natchez’) and medium (‘Columbia Sunrise’, ‘Hall’s Beauty’, ‘Caddo’, ‘Columbia Giant’, ‘Victoria’, ‘Brzezina’). Morphologically, ‘Columbia Giant’, ‘Columbia Star’, ‘Columbia Sunrise’, ‘Hall’s Beauty’, and ‘Loch Tay’ exhibited the most balanced architecture. For fresh-market retail, ‘Hall’s Beauty’ (650.3 gf), ‘Loch Tay’ (632.0 gf), and ‘Victoria’ (882.2 gf) stood out for high fruit firmness, whereas ‘Columbia Giant’ (11.5 g fruit mass, 354.1 gf) is recommended for direct consumer sales due to its large fruit size and acceptable firmness. Key trait associations included flowering duration and drupelet number (r = −0.83); fruiting onset and lateral length (r = 0.75); central leaflet length and fruiting laterals per shoot (r = −0.86); fruit number per lateral and Soluble Solids Content (SSC, r = 0.83); and lateral length (r = 0.84). These findings indicate the importance of proper variety selection for establishing blackberry plantations in the specific climatic conditions of the Moscow Region.

The aim of the study is to evaluate the efficacy of root formation stimulants to enhance vegetative propagation of lemon thyme (Thymus citriodorus (Pers.) Schreb.) under controlled environmental conditions. The study was conducted from October to November 2025 at the N.V. Tsitsin Main Botanical Garden of the Russian Academy of Sciences to assess the effect of root formation stimulants (Kornevin and Epin) on rooting and cutting development of several varieties of lemon thyme (Thymus citriodorus (Pers.) Schreb.): Lemon Variegata, Mystic Lemon, and Goldy. The experiment was performed under controlled conditions: temperature (22 ± 2) °C, air humidity (75 ± 3) %, photoperiod of 14 hours, illumination of 7000 lux. The experiment involved semi-lignified cuttings (8 ± 1) cm long, 30 for each of three treatments (control, Kornevin, and Epin). Treatment with Kornevin resulted in the highest rooting rate – 86 % while in the control group, this figure was 51 %. Treatment with Epin increased rooting to 76 % but also limited root and shoot growth. The greatest number of roots formed with Kornevin treatment, while cuttings treated with Epin demonstrated the shortest root system length and volume, as well as reduced shoot growth. A two-way analysis of variance confirmed the significant effects of the preparations on key parameters of cutting rooting. The data obtained indicate that Kornevin is the most effective agent for vegetative propagation of thyme using semi-woody cuttings, while Epin can be used given its dual action – stimulating root formation and inhibiting further growth of rooted cuttings.